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.

It's not just how much sleep you get that plays a part in your health - it's also when you sleep. An out-of-whack biological clock can mean poor health and higher risk of disease.

That midnight snack you're stealing while you're struggling to get back to sleep may satisfy late night hunger - but it may also be extra calories your body doesn't need.

If you're feeling hungrier than usual, take a look at your sleeping habits - are you getting enough sleep? If not, that may be the reason for the extra appetite.

Dietitians have long promoted the health benefits of a diet rich in fish, vegetables, non-refined cereals, olive oil and even some red wine. A Mediterranean-based diet, while nutritionally healthy, may also ease problems of sleep apnea.

A strong correlation between sleep apnea and obesity suggests that losing weight could have a tremendous effect on improving sleep disorders. While not all sleep apnea sufferers are overweight, the majority are.

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.