Of course, I can have a very good figure by practicing for three months every day, and I can also change my muscle lines in one month. You can train four or six abdominal muscles and chest muscles to lift weights on your back in a month. Sit-ups in the gym every day 100, each group 10. If you insist on resting for 30 seconds, there will be changes. I just keep exercising every day. If you have any questions, you can ask me directly and leave me a message.