But exercise alone is not enough, and you should keep up with your diet, otherwise you will lose weight if you practice more.
At first, lay a good foundation, and start with some basic exercises to improve the overall strength.
Hard pull, squat, pull-ups, dumbbell bench press, bending, push-ups, sit-ups, flat support, abdominal wheels.
In this process, gradually improve and enrich your fitness knowledge to avoid being too radical and causing harm.