You'd start exercising, but you're just too tired, right? It sounds counterintuitive, but a regular exercise program actually increases energy. Researchers found that typically sedentary people who complained of fatigue increased energy levels by up to 20 percent, and 65 percent reported less fatigue. The participants in the study simply incorporated low-impact, low-intensity regular exercise. Music added to movement also helped sustain participants' energy. Staying within that low-moderate heart rate range by doing exercises such as brisk walking or working out on the elliptical trainer was key in increasing energy. Those who engaged in long, strenuous workouts like heavy weight training actually depleted energy.