You can use a track.

An exercise machine designed to engage all of your abdominal muscles at the same time is included in this high-impact exercise. Step 1: The torso track should be on the floor. Down on your hands and knees. Step 2: Rest your knees on a cushion. The handles should be touched with both hands. Step 3: Make sure you contract your Abs. While breathing out, move forward as far as possible.Dropping your stomach can hurt your back. Step 4: Go back to the start. Once you reach the starting position, exhale. Step 5: For 10 reps. Your torso should always be parallel to the floor. Step 6: Adding tension cords to the machine will make this exercise more challenging. Step 7: This exercise can be done 10 times per set. Continue until you have completed 1 to 3 sets. Step 8: Aim to do 1 to 3 sets 4 days a week for 5 weeks in order to start seeing results. You should increase the number of times you do this exercise.