
The record for the longest period without sleep is 11 days
This was set by a Californian student named Randy Gardner in 1964. This is definitely not recommended, however, as Randy experienced extreme sleep deprivation and others have died staying awake for too long.

"Sleeping on your front can aid digestion"
Hands should apparently be positioned above the pillow so you’re in a ‘freefall’ position, whilst laying on your left side can apparently help reduce heartburn.
Sleep experts have discovered a direct link between people’s favourite sleeping positions and their personalities
This is also according to Professor Idzikowski, suggesting that those who sleep in the foetal position “may appear tough but are actually sensitive souls right to their core.” See what the Professor says about the other sleep positions.
How do you know If your body clock is off?
The symptoms for understanding whether your body clock is out of kilter are relatively straightforward:
You find it difficult to go to sleep.
You have restless nights, frequently waking throughout the night.
You wake up early and can’t fall back to sleep.
If you have ever been jet-lagged before, then this is exactly what an out of sync body clock feels like. Jet lag is simply a mismatch of the time of day and your body clock and is one of the primary causes of an out of time sleep-wake rhythm.
You find it difficult to go to sleep.
You have restless nights, frequently waking throughout the night.
You wake up early and can’t fall back to sleep.
If you have ever been jet-lagged before, then this is exactly what an out of sync body clock feels like. Jet lag is simply a mismatch of the time of day and your body clock and is one of the primary causes of an out of time sleep-wake rhythm.