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Definition
By Mayo Clinic staffSome days you're so low on energy that you're drowsy by lunchtime and in need of a nap by midafternoon. What's making you so tired all the time? Stress, poor eating habits, overwork, even medical treatments can wear you down and cause fatigue.
Fatigue isn't the same thing as sleepiness, although it's often accompanied by a desire to sleep — and a lack of motivation to do anything else.
In some cases, fatigue is a symptom of an underlying medical problem that requires medical treatment. Most of the time, however, fatigue can be traced to one or more of your habits or routines. Chances are you know what's causing your fatigue. And with a few simple lifestyle changes, it's likely that you have the power to put the vitality back in your life.
