1. Walking: Walking every day helps to keep healthy, enhance heart and lung function, and reduce blood pressure and heart disease risk.

2. Swimming: Swimming is a very gentle exercise, which does not exert too much pressure on joints and muscles, and can help enhance cardiopulmonary function and muscle strength.

3. Yoga: Yoga can help to relax, relieve stress and enhance flexibility and balance.

4. Cycling: Cycling helps to enhance cardiopulmonary function and lower limb muscle strength, while reducing the impact on joints.

5. Square dance: Square dance is a very popular exercise method, which can help to enhance cardiopulmonary function, coordination and muscle strength.

6. Weightlifting: Proper weightlifting helps to enhance muscle strength and bone density and reduce the risk of osteoporosis.

In short, people after 50 need to choose the exercise mode that suits them according to their physical condition and health condition. At the same time, we need to pay attention to avoid excessive fatigue.