Generally speaking, as long as mothers insist on sit-ups every day and keep the law of increasing exercise, the legendary "slimming miracle" will appear in one month! The standard practice of sit-ups is to do 3~5 groups every day, with 20 in each group. Of course, you can lie down and rest between the two groups 1 minute. Mothers guarantee half an hour's exercise every day, and gradually increase the amount of sit-ups in each group according to their actual ability. It is only a matter of time before they get rid of a small belly. However, it should be noted that mothers need to pay attention to controlling the rhythm to avoid muscle soreness or muscle strain caused by one-time excessive exercise.