Intense physical exercise that causes a heavy sweat should be avoided in winter, lest it consume too much yang energy that should be stored.
Tai chi, walking and simple stretching are good as they warm up the body but don't produce sweating.
Winter swimming is not suitable for everyone. Though swimmers don't sweat, weak people who swim may catch cold and cold water robs the body of yang energy.
It's best not to remove clothes during exercise until the body has warmed up; replace clothes after exercise. Sitting on a cold surface after exercising is unhealthy because pathogenic cold energy can invade from the bottom, travel through the back and reach the head, undermining organ health.
Editor: Liu Fang