The number of hours sleep a person needs differ from individuals to individuals. Some individuals can work with high productivity after six hours of sleep while few may need up to nine hours. An average person needs seven - eight hours of sleep daily otherwise he will be sleep deprived. If a person is taking less than 5 minutes to fall asleep after laying on bed than he should re consider his sleeping habits as he is sleep deprived. Maintaining proper sleep is important to maintain the productivity of almost every organ and here are the major reasons why you should have proper sleep
Hormones: During sleep our body produces the human growth hormone and human growth hormone is essential for the body growth besides maintenance and repair of body muscles.
Immune System: Sleeping helps in increasing the level of certain agents which are essential for fighting of disease and illness. These agents will drop when we are awake and constant sleep deprivation can cause huge imbalance in immune system.
Skin: Sleeping also helps in improving the quality of skin. Deep sleep speeds up our skin's metabolic rate. Nightly sleep repairs the damage done to our skin during the daytime.
Muscles: During deep night sleep the muscle will remain in a relaxed state which will help in restoring and repairing vital tissues.
Deep sleep can also helps in improving the productivity of digestive system, eyes, oral system and respiratory system.