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Your ability to focus tomorrow may be determined before you open your laptop. In a large 2023 review, a study of around 480,000 adults aged 38 to 73 found that sleeping 7 hours per day was associated with the strongest executive-function performance on computer-based attention and working-memory tests. The same review reported that 11.8% of
10 Executive Functioning Tips for Better Performance Read More »
If you spend 8 hours in bed but sleep only 6.4 of them, your sleep efficiency is 80%, not 8 hours of recovery. That distinction changes how I read an executive sleep profile. The problem may not be a lack of sleep opportunity. It may be the time spent awake, alert, worrying, checking the clock,
Sleep Efficiency: The Executive Guide to Better Recovery Read More »
Morning sunlight and sleep are genuinely, measurably connected. Light hitting your retina, especially before 10 a.m., signals your suprachiasmatic nucleus, the brain’s master clock, helping set the timing of your entire circadian rhythm, including when melatonin rises at night. A 2025 study found every additional 30 minutes of morning sun exposure before 10 a.m.
Morning Sunlight and Sleep: What the Research Shows Read More »
Most advice on how to improve HRV score starts with sleep, meditation, and cold showers. That advice isn’t wrong, but it’s incomplete. Before changing your bedtime or adding another recovery gadget, verify that the number you’re trying to improve is being measured consistently and that your training load isn’t working against you. For high-performers, HRV
How to Improve HRV Score: A High-Performer’s Protocol Read More »
“Adrenal fatigue” is not a recognized medical diagnosis. No major endocrine society accepts it, and a comprehensive 2016 systematic review of 58 studies found no scientific basis linking cortisol levels to fatigue severity, or any evidence that the adrenal glands themselves malfunction from chronic stress in otherwise healthy people. That doesn’t mean the exhaustion, the
Adrenal Fatigue and Sleep: What’s Actually Real Read More »
Adults with anemia had 32% higher adjusted odds of insomnia, and the pooled estimate across 22,134 participants was 39% higher odds. That matters for executives because the problem often shows up after the routine is already optimized, the mattress is good, the room is dark, and sleep hygiene is “done” but the body still wakes
Can Anemia Cause Insomnia? a Practical Guide Read More »
NSDR, or Non-Sleep Deep Rest, is a term coined by Stanford neuroscientist Andrew Huberman for a category of practices, most directly based on yoga nidra, a guided relaxation practice from yoga, that bring the body into deep rest while staying conscious. Research shows genuine, if often modest, benefits: yoga nidra practices are linked to reduced
NSDR for Sleep: What the Research Actually Supports Read More »
64% of elite athletes and 65% of sub-elite athletes reported poor sleep in a large 2021 survey, which is why athletic recovery is usually won or lost on sleep quality, nutrition timing, and load management, not on gadgets. If the night is bad, the cold plunge, massage gun, or supplement stack rarely rescues the next
Athletic Recovery: The Protocol High Performers Actually Use Read More »
You’re in the middle of the afternoon, your inbox is still moving, and your brain has checked out. The desk lamp feels too bright, the third tab on your screen is starting to blur, and that familiar question lands again, why do I get sleepy in the afternoon even when the night before didn’t feel
Why Do I Get Sleepy in the Afternoon? a Practical Guide Read More »
4-7-8 breathing is a simple technique, inhale for 4 seconds, hold for 7, exhale for 8, developed by Dr. Andrew Weil as an adaptation of pranayama, the yogic practice of controlled breathing. The extended exhale is designed to activate your vagus nerve and shift your body toward a calmer, parasympathetic state. The honest picture on
4-7-8 Breathing for Sleep: Steps and What Research Shows Read More »
