If you are tired, a trip to the gym will do you more good than a night on the couch, even though you might prefer the latter.
Fatigue is a common health complaint and, while it can be a sign of a more serious medical condition, it often is not. Research has shown that regular exercise can actually increase energy levels, and that result is particularly strong in people who are sedentary.
According to the Mayo Clinic , exercise helps your cardiovascular system work more efficiently, which leads to more energy.