If you just want a traditional "V" shaped back, you don't have to develop your lower back too much. If you want to make your "general belly" smaller, you need to strengthen your lower back muscles and enhance the elasticity of your abdominal muscles.
Do you know the complete guide to training lower back muscles?
Unless the lower back is injured, no one will notice that the lower back is a muscle group. In fact, the lower back plays a vital role in the overall health of the human body and the development of whole-body strength. If you want to develop the muscles of the whole body as quickly and safely as possible, you must pay enough attention to the lower back. Many poses require the lower back and abdominal muscles to work together for stability, especially those that require a flat back for support.
If you work your lower back too early in a training session, it will affect your ability to work other muscle groups later in the session. Generally speaking, the most reasonable sequence of exercises is: exercise the upper back first, then the lower back.
Main training movements: Seated rowing can exercise the entire back. When doing this action, you can use the forward and backward movement of the upper body (do not arch your back) to exercise the lower back.
