The role of push-ups mainly includes the effective exercise of upper limb muscles, waist muscle groups and back strength. 1. Exercise upper limb muscles: push-ups can effectively exercise upper limb muscles such as biceps, triceps, etc., which can help to enhance upper limb strength. 2. Exercise lumbar muscle groups: the successful completion of a complete push-ups also need the participation of lumbar muscles, so push-ups can also exercise the lumbar muscles, such as rectus abdominis. 3. Exercise the back muscles: In addition to the upper limbs and waist muscles, the participation of the back muscles is also essential when doing push-ups. Maintaining the balance of the body in the movement can not be separated from the back muscles of the force. Push-ups, as a convenient and feasible non-instrumental exercise in daily life, can effectively exercise the whole body muscles. It is recommended to exercise under the guidance of professionals to avoid unnecessary injuries caused by inaccurate posture or excessive exercise intensity.