In order to look and feel your best, you must take care of your body through exercise. Cardio or aerobic movements will give you a boost of energy to function at your highest capacity. Engage in interval training of 30 seconds or more to pump up the intensity of your exercise. Also, practice resistance training with weights of 10 to 12 repetitions. Building muscle mass will increase storage of protein in your body so that when it is exposed to illness, it can rely on those proteins to heal itself. Exercising regularly through cardio activity and resistance training is essential to improve your longevity and wellbeing.