A combination of aerobic workouts (which, depending on your fitness level, can include walking, running, swimming, and other vigorous heart-pumping exercise) and strength training (weight lifting, resistance training) is considered best for heart health. These exercises improve the muscles’ ability to draw oxygen from the circulating blood. That reduces the need for the heart—a muscular organ itself—to work harder to pump more blood to the muscles, whatever your age.
With that said, don’t relax too much, or it loses the effect. It’s okay to indulge every so often. Treat yourself to some junk food you’re craving, imbibe a drink here and there, and spend a day vegging out on your couch. Staying healthy doesn’t have to be torture. Just turn down when you can and dedicate some time to better the health of your body. You only get one.
The skin also serves as a release point for heat. (See “Why Does My Face Turn Red When I Exercise?” for more on that.) When you exercise, your muscles generate a lot of heat, which you have to give up to the environment so your body temperature doesn’t get too high, Hackney says. The heat in the muscle transfers to the blood, which shuttles it to the skin; it can then escape into the atmosphere.