2. Yoga is a very simple but beneficial exercise. Practicing yoga can improve the heart and lung function of human body, promote the metabolism of human cells and enhance the immunity of human body. But I just had a full meal, so I'm not suitable for yoga. Yoga is an intense activity. When you have a full meal, there is still undigested food in your stomach. At this time, practicing yoga will oppress your stomach and lead to gastroptosis.