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.

Skipping a nap - even for one day - has a significant effect on toddlers' ability to express enthusiasm and deal with frustration according to a recent study.

The drug Ambien has established effectiveness at helping insomniacs, people who spend their nights trying to somehow charm their own body into giving up wakefulness. A new study finds that patients with primary insomina are unlikely to escalate their dose.

Chronic fatigue syndrome (CFS) is a complex disorder that affects more than one million Americans. A couple of years ago, a study was released that claimed that XMRV (a gammaretrovirus) was a contributing factor in developing CFS. But now, scientists say that is not the case.