Too little sleep or too much poor quality sleep can hurt more than your energy levels - it can also hit your waistline. If you're not getting enough sleep, you may be trading Z's for pounds.

Sleep is an important part of your health. Without your nightly shut-eye, your body would not get the rest it needs to prepare for the next day. A lack of sleep can also lead to certain diseases, including diabetes.

Insufficient and disorganized sleep puts kids at higher risk of developing obesity and other health conditions, which may be able to be mitigated by "catch up" sleep on weekends and holidays.

Keeping the lights on before going to sleep may have a negative influence on your health, according to a study to be published in the Journal of Clinical Endocrinology & Metabolism .