Boxing is a very good exercise, but you must know your physical condition. Boxing consumes a lot, especially the test of internal organs. You must follow the principle of gradual progress. For people with visceral problems, we must carefully choose this exercise method and pay attention to proper rest. Don't do the next exercise until my qi and blood are fully recovered. I am 40 years old and have been doing aerobic boxing for 45 minutes every year, four times a week. My weight ranges from 160 kg to 140 kg. I also take care of other sports, swimming and boxing. Ask me if you don't understand, QQ156137011. I wish you good health!