The library

Sleep reads

Chronotype, deep sleep, and the 3pm crash.

Wednesday reads · Sleep

8 reads

Week 1

Am I lazy for needing nine hours, or is that real?

It is real. About 40 to 50 percent of whether you are a short or long sleeper, and whether you are a morning or night person, is written in your genes.

Week 2

SleepWed

Why Do Some Indians Wake Up Tired Even After 8 Hours of Sleep? Your Genes May Have the Answer

Why Do I Wake Up Tired After 8 Hours of Sleep? Waking up tired after 8 hours of sleep is often linked to sleep genetics, not just sleep duration. Genes that regulate your circadian rhythm, how efficiently your body processes deep sleep, and how you metabolize caffeine and certain nutrients can all influence how rested you feel, regardless of how many hours you spent in bed.

SleepWed

Why does coffee after lunch ruin my sleep but not my friend's?

Around half of all adults are slow caffeine metabolisers, and for them the CYP1A2 gene keeps caffeine active in the body for up to ten hours instead of four.

Week 3

SleepWed

Can Your Genes Affect How Well You Sleep?

Yes, genetics significantly affects how well you sleep, how much sleep you need, and when your body naturally wants to sleep. Specific genes, including CLOCK, PER3, ADRB1, and DEC2, regulate your circadian rhythm, determine your chronotype, and influence your susceptibility to insomnia and sleep deprivation. DNA-based differences explain why some people thrive on six hours whil

SleepWed

Why do I wake up tired even after eight hours in bed?

Because time in bed is not the same as deep sleep - variants in PER3 and CLOCK can compress the restorative phases, so eight hours of sleep delivers five hours of recovery.

Week 4

SleepWed

Is it bad that I'm a natural night owl?

Not bad - just genetic. A late chronotype is a real, inherited setting, and forcing an early schedule onto it fights your own hormones rather than fixing anything.

Week 5

SleepWed

Why do I wake up at 3am almost every night?

Waking at 3am most nights is rarely random and almost never a sign that something is seriously wrong - for many people it is a normal feature of how sleep is built, worsened by a few everyday habits and shaped at the edges by body-clock genes like PER3.

Week 7

SleepWed

Why am I tired all the time even when I sleep enough?

Persistent tiredness despite enough sleep is extremely common, and in the large majority of cases it is not a sign of anything sinister but a stack of ordinary, correctable factors, and the reassuring part is that most of the common causes are findable and fixable once you know where to look.