Cranky? You're Likely Fighting Fatigue
WebMD News Archive
Beware the Energy Drinks, Caffeine Pills continued...
To really give your body an energy boost, grab a glass of orange juice or a handful of pretzels, she advises. "A lot of times, people are not eating regularly. They grab a Red Bull instead of food. [An energy drink] is not a substitute for real energy food."
In the long term, we simply need sleep, say the experts. Sleep is complex, and despite all the research, no one really understands why we have REM and non-REM sleep cycles. "There's a need, a reason why we have a drive to sleep," says Castriotta. "We suspect that there's a major immune function to sleep and immune impairment from lack of sleep."
If you need an alarm clock to get you out of bed, you're sleep deprived, says Mahowald. "If you weren't, you would have awakened spontaneously. You wouldn't need the alarm."