Drinking coffee is objectively good, the timing and dosage is the problem
Alcohol can activate the fight or flight response system even while you sleeping–causing sleep fragmentation
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Matthew Walker’s intro to REM Sleep & Non-Rem Sleep:
20%-25% in REM sleep
20%-30% in deep non-REM sleep
The rest in light non-REM sleep
Seven to nine hours of sleep covers the vast distribution of human sleep need
Genetic short sleepers (6 hours or l...
Metrics that Matthew uses for sleep tracking:
Experiment: If you regularly set an alarm clock, would you wake up at that same relative time without the alarm clock?
If the answer is no, you’re not listening to your body’s needs and are probably running on a sleep deficit.
Don’t force sleep, it’s dangerous to stay awake in...
The snooze button is the perennial expression of the human frustration of chronic lingering sleep debt
The harder you try to sleep, the harder it becomes
Don’t try to ca...
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A lot of the symptoms associated with a hangover are a product of sleep deprivation.
Alcohol affects our ability to get into what is known as rapid eye movement (REM) sleep, the bulk of which occurs in the last two-thirds of the night. As a rule of thumb, it takes ...
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