Hip-lifting and leg-lifting on your back: the simplest hip-lifting and leg-lifting is a good choice for people with weak upper limb strength.

Abdominal roll: It is safer and more effective to exercise the upper abdomen, and there are many modes of abdominal roll.

Abdominal vacuum contraction: it is one of the few movements that can exercise transverse abdominal muscles.

Supine, straight legs at both ends: straight legs sit on your back, and both ends are V-shaped, so it is called V-up, which is similar to supine, and both ends of your knees are bent. It is also a double belly roll, which can exercise the whole rectus abdominis.

These yoga moves can shrink your stomach.

hope this helps