Doing sit-ups is very easy to get hurt. It is suggested that it is best to do sit-ups, that is, half sit-ups, and the waist should not leave the mat, so as to protect the back and waist and exercise the abdominal muscles.

In fact, there will be a feeling of muscle strain at the junction of your right thigh and waist, which is probably caused by uneven force when doing sit-ups. Do more relaxation exercises such as stretching after running ~

Mm-hmm ~ it should be okay ~ I've had this situation before ~ the coach said it was my uneven exertion. In fact, it is easy to have uneven stress. We usually use one hand too much, which will also cause one shoulder to be thicker and affect sports. Therefore, moderate exercise should be used to correct it.