a I_It could make u thinner......the less sleepyou get,higher your body mass indextends to be.Research showed
that the people who sleep less than 5 hours were found to have 15%more ghrelin(a harmone that boosts hunger)in their bodies and 15%less leptin(which suppresses it)than those sleeping 8 hours
2-It could fight against ulcers,colds and even ulcers...Good sleep boosts immune system Melatonin,
produced when u sleep,is a
cancer fighting antioxident.Night shift workers may have up to 70times greater risk of breats cancer.Also the chemical to repairdamage to stomach lining is produced is secreated during sleep.so staying up for all nights regularly could raise your risk of ullcers.
3_Sleep plays a key role in making new memories stick in the brain.A Harvard experiment showed that subjects taught complex finger moovements such as piano scale recalled them better after 12 hours sleep than 12 hours wakefulness
4_IT COULD KEEP YOU ORDERLY...if ur a teenager,that is.the depression and low self esteem often associated with less sleep