Sleep is when your body repairs the damage you’ve done during the day. Even if you don't think you've done any!
While you sleep, hormones involved in tissue repair, like testosterone and human growth hormone, kick into high gear and work away while you're in the land of nod.
Losing sleep can also impair your exercise ability. According to research sleeping only six hours can double or even triple your reaction time.
Everyone needs their own magic number for sleep, for me anything less than 8 and I'm not properly functioning. Where as, some people operate best on as measly 4 hours.
When it comes to performance, arriving at your workout sleep deprived is like showing up drunk. Go figure!
Sleep deprivation also makes you more susceptible to colds and more likely to get injured.
A study of high school athletes found that those who slept fewer than eight hours each night were more susceptible to injury.
Bottom line: sleep should be your number one recovery priority.
Sleep is the most potent recovery tool known to science. Nothing else comes close. If you’re not getting enough sleep, there’s no other recovery method you can use that will make up the difference.