Boosting Your Energy

Fatigue is a symptom, not a disease, and it’s experienced differently by different people. For example, the fatigue you feel at the end of a long day or after a time zone change might feel similar to the fatigue resulting from an illness. The difference is that fatigue from stress or lack of sleep usually subsides after a good night’s rest, while other fatigue is more persistent and may be debilitating even after restful sleep. Harvard’s Special Health Report, Boosting Your Energy,... Learn more »