notorious disasters, like the destruction of the space shuttle challenger and the grounding of the exxon valdiz. one to five auto accidents in the u.s. result from drowsy driving. that's about 1 million crashes a year. better mood. getting enough sleep won't guarantee a sunny disposition, but you've probably noticeed when you're exhausted, you're more likely to be cranky. that's not all. when not getting enough sleep affects your emotional regulation, you're overtired, more likely to burst into tears or laughing uncontrollably. better weight control. getting enough sleep can help you maintain your weight and conversely sleep loss goes a lot way to increase risk of weight gain. why? part of the problem is behavioral. you're overtired. you might be less likely to have the energy to go for a jog or cook a healthy dinner after work. clearer thinking. have you ever woken up after a bad night's sleep feeling fuzzy and confused? like your brain is not getting out of first gear? better memory, feeling forgetful? sleep loss could be to blame. studies have shown while we sleep, our brains process and con