A baby needs up to 17 hours sleep for their rapidly developing brain and body. Sleep helps develop motor skills and dreams help with learning.
No matter what your age, sleep is crucial. There’s one difference, though. We need different amounts of sleep depending on our age.
There are two phases of sleep. NREM is deep sleep and transfers memories. REM is dream sleep that takes new memories and makes sense of them.
Caffeine can keep you awake, even when you need to sleep by using a hormone called adenosine, which masks the urge to sleep.
The circadian rhythm has two parts – wakefulness and sleep. It follows a 24-hour rhythm that tells your body when to sleep and when to wake.