You can do crunches. Those are similar to sit-ups but your back is at less risk.
On your back, knees bent, lift only your shoulders off the floor, hands are either crossed in front of your chest or behind your head, hold for a count of 3 let yourself down slowly and repeat as many times as you can.
To protect your back when doing any floor exercise, keep your knees bent and your hips tilted up so that the small of your back stays pressed to the floor.
On your back, knees bent, lift only your shoulders off the floor, hands are either crossed in front of your chest or behind your head, hold for a count of 3 let yourself down slowly and repeat as many times as you can.
To protect your back when doing any floor exercise, keep your knees bent and your hips tilted up so that the small of your back stays pressed to the floor.