All your body needs for a natural high is a good dose of old-fashioned exercise. Aerobic exercise is your best asset for improving cardiovascular health, increasing your oxygen intake and boosting your metabolism.
As simple as it sounds, go outside for a jog or take a morning swim in order to gain maximum energy. A little aerobic exercise to start off your day will awaken your mind and put your body in optimal condition for the day ahead. Numerous studies have found that daily exercise has even more potent energizing effects than regular caffeine consumption.