2, sit-ups, one person can complete sit-ups at home, but the difficulty is greater than two people. Sit-ups are movements back and forth in the abdomen, which can make the abdominal fat gradually firm and no longer obese.
3, yoga abdominal breathing, you can sign up for a yoga class, go about twice a week, yoga is not only for health but also for fitness, including a tutorial on abdominal breathing and thin waist exercise.