What exercise should I do in cold weather?

Are you always at home in winter and unwilling to move? In fact, if you are not afraid of cold exercise, you will have unexpected surprises. If you stay at home all the time and don't want to move, you will gain a lot of weight after a winter. In addition, winter can not only warm your body, but also strengthen your heart and lung function and enhance your resistance. Why not?

Jogging, winter swimming, rope skipping, skiing, yoga, stair climbing, badminton and so on.