Improving Sleep For Productivity

Sleep is the brain’s most powerful performance tool, and most people treat it like a negotiable expense. Neuroscience is blunt: when you cut sleep, the brain shifts into survival mode. Astrocytes prune more synapses. Microglia stay activated. The glymphatic “night shift” that clears waste runs poorly. You don’t just feel tired. You lose clarity, memory consolidation, and emotional control. Decisions get riskier. Empathy gets thinner. Creativity shrinks. It’s not hours you’re sacrificing. It’s executive function. High performance isn’t willpower, it’s architecture. The brain thrives in rhythm, not chaos. Try this for 7 days: • Wake at the same time daily (weekends too). Let bedtime adjust earlier. • Light before phone: 5–10 minutes of outdoor light upon waking. • Caffeine curfew: none after 2 PM. • Protect one 90-minute deep-work block after your best sleep. • Swap micro-scrolls for a 10–20 minute early-afternoon nap. • Dim lights and screens 60–90 minutes before bed. • Run a 10–15 minute wind-down ritual (shower/stretch/paper journal, same order every night). Small rituals, massive neurological returns. Leaders don’t optimize sleep because it’s soft; they optimize it because it’s leverage. Start tonight. ♻️ Kindly repost to share with others Follow Benjamin B. Bargetzi for more on Neuroscience, Psychology & Future Tech

Your body clock predicts dementia 3 years before symptoms appear. New study: Weak circadian rhythm = 2.5x higher dementia risk. I've watched patients decline for 15 years. And I've never seen this connection made so clearly. The research (2,200 adults tracked for 3 years): Weak circadian rhythm: 2.5x higher dementia risk Activity peaking after 2:15 PM: 45% higher risk Strong, consistent rhythm: Protective What surprised me: They measured this with a simple chest monitor worn for 12 days. No brain scans. No blood tests. Just tracking when you're active versus at rest. Why your body clock matters for brain health: Disrupted rhythms increase brain inflammation ↳ Chronic inflammation damages neurons ↳ Accelerates amyloid buildup Poor circadian alignment interferes with sleep ↳ Brain clears toxic proteins during deep sleep ↳ Fragmented sleep = inadequate clearance Late activity peaks signal misalignment ↳ Body clock out of sync with natural light ↳ Hormonal systems get confused ↳ Metabolic dysfunction follows The patients I diagnose with dementia: Commonly have terrible sleep patterns. Going to bed at different times. Waking at random hours. Napping irregularly. Most active at night. I used to think this was a symptom of dementia. Turns out, it might be a cause. What counts as a strong circadian rhythm: Same bedtime every night (within 30 minutes) Same wake time every morning (yes, weekends too) Most active between 10 AM and 2 PM Minimal activity after 9 PM No long daytime naps The "night owl" problem: Being naturally active later isn't the issue. The issue is inconsistency and misalignment with light exposure. If you're consistently active 8 PM-midnight and sleep 2 AM-10 AM with good light exposure, that's fine. If you're sporadically active at all hours with no pattern, that's the problem. How to strengthen your circadian rhythm: 1. Light exposure timing ↳ Bright light (ideally sunlight) within 1 hour of waking ↳ 15-30 minutes minimum ↳ Signals to brain: "This is daytime" 2. Consistent sleep schedule ↳ Same time every night (even weekends) ↳ Non-negotiable ↳ More important than sleep duration 3. Time-restricted activity ↳ Exercise and social activity before 7 PM ↳ Dim lights after 8 PM ↳ Screen time minimized at night 4. Regular meal times ↳ Breakfast within 1 hour of waking ↳ Dinner 3 hours before bed ↳ No late-night snacking My clinical observation: The patients who maintain strong routines into their 80s and 90s stay sharper. The ones who let schedules drift show faster decline. This isn't about being rigid. It's about consistency. Your brain needs to know what time it is. ⁉️ Do you go to bed at the same time every night? ♻️ Repost if you believe simple routines beat complex interventions 👉 Follow me (Reza Hosseini Ghomi, MD, MSE) for evidence-based brain health strategies Citation: Wang W. Association Between Circadian Rest-Activity Rhythms and Incident Dementia in Older Adults. Neurology. 2026.

Being tired all the time isn’t normal. But most of us just accept it as part of life. And the tricky part? It’s not just about sleep. Fatigue sneaks up in ways we don’t always notice: ❌ Hitting snooze but still waking up exhausted ❌ Drinking coffee all day but feeling drained by 3 PM ❌ Struggling to focus even after a full night’s sleep Turns out, energy management is just as important as sleep. And when we’re constantly tired, it’s usually because our daily habits are messing with our body's natural rhythms. Here’s what research suggests can help: ➡️ Move in the morning – A short walk or light workout helps reset your body clock. Studies show that even 5-10 minutes of movement can boost cortisol (the hormone that wakes you up) and improve energy levels throughout the day. ➡️ Start with sunlight – Natural light in the morning increases alertness and helps you sleep better at night. If possible, get outside for 10 minutes within an hour of waking up. No sunlight? Sit by a window or use a bright light. ➡️ Cut caffeine in the afternoon – Caffeine blocks adenosine, the hormone that makes you feel sleepy. Even if you don’t feel wired, it lingers in your system for hours. The fix? Stick to morning coffee and swap afternoon caffeine for water, movement, or a power nap. ➡️ Build a wind-down routine – Late-night stimulation (scrolling, bright screens, overthinking) disrupts deep sleep. A consistent evening routine, like dimming the lights, stretching or reading, helps signal to your brain that it’s time to rest. Better sleep means more energy. We often think being tired is just about getting more sleep. But managing how we wake up, move and wind down has just as much impact. What’s one small change you could make today to feel more energised? 🚀

Ever wake up just before your alarm? It might not be a coincidence… It turns out, our brains have a natural way of keeping track of time, an inborn “clock” mechanism, which is synchronised to light in our environment. It’s got the coolest name for such a tiny brain region: the suprachiasmatic nucleus (SCN) - literally, the group of cells (nucleus) above (supra) the optic chiasm (crossing). The SCN is essentially your brain’s “master clock” because it is responsible for coordinating our circadian rhythms. Light-sensitive cells in your eyes send signals to the SCN, which regulates melatonin - a hormone that makes us sleepy - via the pineal gland. Our species evolved to be diurnal, being active in the day and sleeping at night. As a result, daylight inhibits melatonin release, making us more alert. At night, the lack of light promotes melatonin release, making us sleepy. This is why for better sleep hygiene, experts often recommend limiting exposure to electronic devices for at least an hour before bedtime. The light from electronic devices can shift your body clock and this gets aggravated by heightened anxiety associated with doom scrolling -- neither of which helps your sleep. Want to support your brain’s internal clock? A few simple habits can make a big difference: 👉 Get natural sunlight in the morning. This helps reset your body clock. 👉 Stick to a consistent sleep schedule, even on weekends. 👉 Limit screens at least an hour before bed. 👉 Keep your bedroom dark and cool to promote better sleep. BTW, in teenagers melatonin starts to be produced later at night, which is why many teenagers don’t feel sleepy until much later in the evening. It’s also the reason they struggle to get up in the morning. For teens, going to school early is a bit like forcing them into a different time zone during the week and only letting them reset on weekends. When your teenager sleeps in on the weekends, bear in mind they are dealing with a genuine biological change in their circadian rhythm during the teenage years. So when you wake right before your alarm, blame (or credit!) your suprachiasmatic nucleus for being such a good time keeper! Understanding our biology helps us work with our natural rhythms rather than against them. How do you optimize your daily schedule around your circadian patterns?

I have been teaching for years that REM sleep is when the brain finds emotional balance, recalibrating the physiological reaction to yesterday’s emotionally difficult moments. People usually just nod politely. This week, a new study adds more evidence. Researchers experimentally fragmented REM sleep in healthy adults without diminishing total sleep time (a really cool procedure, by the way!). Participants still slept about seven hours at normal efficiency. The researchers then tested whether they could physiologically habituate to emotional stimuli the next day. Fragmenting REM sleep impaired overnight habituation of a heart rate measure of stress called the cardiac deceleration response (at 24 hours and again at 48 hours). The degree of impairment tracked alpha-power intrusions over parieto-occipital regions during the stimulated REM sleep, tying a behavioral effect to a specific cortical signature. The leaders among you will recognize the feeling, I'm sure. You wake up and the meeting from yesterday is still lit up in your chest, and you can't seem to find the off switch. The thing to understand here is that REM fragmentation is invisible. You managed to sleep for seven hours. Maybe your sleep tracker even reported 87 percent. You feel tired but nothing alarming, and yet your nervous system is carrying Friday’s unprocessed emotional load into Monday. Common culprits for REM fragmentation include alcohol in the second half of the night when REM is heaviest, late caffeine, untreated mild sleep apnea, a baby monitor, a partner who moves a lot, a phone that buzzes, and, of course, stress itself. Small perturbations like these have real consequences. If your emotional resilience has felt disproportionately off lately, the explanation may have less to do with character and more to do with sleep continuity. We're actively working in my lab to ameliorate this with targeted reactivation of the relaxation response during sleep. Paper: Viselli et al., Sleep, April 2026. DOI: 10.1093/sleep/zsaf409

Sleep is not just rest. It is active maintenance for your brain. Research shows that during sleep, the brain activates the glymphatic system, a network responsible for clearing metabolic waste and toxins that accumulate throughout the day. This process is significantly more active during deep sleep, when brain cells shrink slightly to allow fluid to flow more efficiently and wash away byproducts like beta amyloid, a protein linked to Alzheimer’s disease. When sleep is cut short or disrupted, this clearance process is reduced, allowing waste to build up over time. Studies consistently link poor sleep with cognitive decline, impaired memory, and increased neurological risk. The brain cannot perform this level of cleanup while you are awake. Sleep is not downtime. It is essential biological housekeeping that protects long term brain health. (Science Magazine; Xie et al. 2013; National Institutes of Health)

A UK high school saw remarkable results after shifting its start time from 8:50 a.m. to 10:00 a.m. According to a four-year study led by Dr. Paul Kelley and published in Frontiers in Human Neuroscience, the change led to a dramatic drop in student absences due to illness, over 50% fewer sick days were recorded during the two years of the later start. Academic performance also improved, with a 12% increase in students making good progress in national exams. The study focused on students aged 13 to 16, a group particularly affected by changes in sleep patterns during adolescence. According to Dr. Kelley, teenagers experience a natural shift in their circadian rhythms that makes it difficult for them to fall asleep early and wake up refreshed for early classes. By starting school at 10 a.m., the schedule aligned more closely with their biological clocks, resulting in better sleep, improved health, and sharper focus in class. Interestingly, when the school reverted back to the earlier start time, illness rates rose again by 30%, reinforcing the connection between sleep and student well-being. The findings support a growing body of research suggesting that later school start times can have a profound impact on both physical health and academic success. This study adds weight to the argument that education systems should consider the science of sleep when designing school schedules. According to the researchers, aligning school hours with adolescent biology isn’t just a matter of comfort, it’s a matter of public health and educational equity.

We all know how important consistent sleep is, but the pressures of work and life often don’t allow us to achieve this basic goal. I’ve worked 20-hour shifts during my residency. Forget time for family and friends, I often didn’t even have time to shower or eat. So sleeping for just 3-4 hours had become my new normal. Unfortunately, sleep deprivation has become a part of our work culture, where we often laugh it off or embrace it as a part of the ‘hustle’. We also rank as the second-most sleep-deprived nation worldwide, after Japan. But what we don’t realise is that it is a serious issue that could be causing: - Fatigue and tiredness - Irritability and mood swings - Difficulty concentrating & focusing - Increased risk of obesity and diabetes - Impaired judgment & decision-making - Kidney disease, stroke, and hallucinations This takes a toll on your personal and professional life as well, putting productivity and relationships at risk. But the good news is that avoiding these effects is in your hands. All you need to do is use the S.L.E.E.P framework: ▶ 1. Schedule: Go to bed and wake up at consistent times, even on weekends. This regulates your body's internal clock, making it easier to fall asleep and wake up naturally. ▶ 2. Light: Dim the lights and avoid screens at least an hour before bedtime, as the blue light emitted by these devices can interfere with the production of sleep hormones. ▶ 3. Environment: Make sure your bedroom is quiet, dark, and cool. Consider using blackout curtains, earplugs, or a white noise machine to block out disruptive sounds. ▶ 4. Exercise: Aim for at least 30 minutes of moderate exercise early in the day, and avoid vigorous exercise close to bedtime as it can be stimulating. ▶ 5. Prioritise: Make sleep a priority by practising good sleep hygiene habits: - Make sure your bed is supportive and comfortable - Avoid caffeine or large meals close to bedtime - Establish a relaxing night-time routine - Get some sun right after waking up Bonus Tip: If you can't fall asleep after 20 minutes, get out of bed and do a relaxing activity until you feel tired. Don't lie awake in bed worrying, as this can worsen sleep anxiety. How many hours do you sleep every day? #healthandwellness #workplacehealth #sleep

Over the past couple of years, I've interviewed several sleep professors and physicians. They've shared a LOT of sleep tips with me. Being the lab rat psychologist I am, I tested them all. On myself. At this point, I have tried everything short of sleeping upside down like a bat. Many sleep tips failed to shift the dial. But three strategies genuinely transformed my sleep. Tip #1: Sleep LESS to sleep better This one surprised me. When I was struggling with insomnia, I was told: the worst thing you can do is spend more time in bed. Instead, less time in bed is the trick. Sleep restriction therapy (which I wrote about in The Health Habit) works like this: If you're only sleeping 6 hours but spending 9 hours in bed, restrict your bed time to 6 hours. Your sleep efficiency skyrockets. Then gradually increase it over the course of a few weeks. Tip #2: The 3-2-1 Rule 3 hours before bed: No more food 2 hours before bed: No more work 1 hour before bed: No screens (Kindle doesn't count) "But Amantha, I need to scroll the socials at 11pm!" (Said no well-rested person ever). Tip #3: Wake within the same 30-minute window every day Yes, even on weekends. I can hear you groaning. Let me explain. This is the cure to "social jetlag". Your circadian rhythm doesn't care that it's Saturday. When you sleep in for "just 2 more hours," you're essentially giving yourself jet lag. I wake between 6-6:30am every single day. No exceptions. The payoff? I fall asleep easily, wake naturally, and haven't needed an alarm in months (except when I have a ridiculously early How I Work podcast interview to get up for). What's your most effective sleep hack? Or are you still searching for the holy grail of good sleep? #SleepScience #ProductivityHacks #EvidenceBasedWellbeing

I used to think hustle was the key to high performance. Then I learned the real secret: REST is the most powerful RGA. Most sellers grind themselves into dust chasing performance. But I’ve coached 100s of top performers—and the highest earners don’t work more hours. They master their energy. Here’s how I worked 40 hours a week (never work nights or weekends) and still outperformed 99% of reps: Let’s flip the script on what it takes to be a top performer in sales. Everyone talks about RGAs—Revenue Generating Activities. But no one talks about the energy required to do RGAs well. If you want to prospect with intensity, sell with presence, and close big deals— You need rest. At a mastermind recently, someone called it the “Ultimate RGA”: Rest Generating Activities. Because without rest, RGAs fall apart. You’ll be foggy. Reactive. Distracted. You’ll confuse activity with impact. Here’s how I train reps to recharge intentionally—so they can win without burnout: 1. Plan 4 Vacations a Year I pre-block 4 weeks off annually. They’re non-negotiable. It doesn’t matter if it’s Hawaii or your local mountain trail— The key is knowing you are unavailable. Not half-working. Not checking Slack. Fully present. Fully off. 2. Track and Protect Your Sleep I use a WHOOP. You can use anything. But if you're not sleeping 7+ hours, consistently, you’re underperforming. You can’t bring intensity to your calls when you’re running on fumes. Sleep is a performance multiplier. 3. Calendar Block Your Breaks My calendar is blocked 12–1 PM every day. Lunch with my wife. A walk. Or just quiet. Three hours of deep work → 1 hour of recovery → back for the final sprint. Burnout doesn’t happen from work. It happens from nonstop work. 4. Ruthless Time Boundaries I stop work at 5 PM most days. No nights. No weekends. Ever. You don’t need 70 hours a week to crush quota. You need to stop saying yes to distractions and start owning your schedule. Parkinson’s Law is real: The less time you give yourself, the more efficient you become. 5. Say No to Busy Work I use the 12 Week Year system. Everything I do ties back to a goal. Internal meetings? Minimized. Slack and email? Batched and time-boxed. If it doesn’t move pipeline or drive impact, I don’t touch it. If you’re working 60+ hours and still missing quota... It’s not your work ethic that’s broken. It’s your calendar. Stop measuring your week by hours worked. Start measuring it by energy invested in what matters. You don’t need to grind harder. You need to recharge better. Work less. Sell more. Live fully.