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Step 1
Assume the right position. Lie on the floor with your knees bent and your arms across your chest. Practice doing a few regular sit-ups, making sure to exhale when you come up. Once you have this form down, you can begin to do different exercise variations.
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Step 2
Make it a little harder. Once you've gotten good at the standard sit-up, you can spice things up by changing your arms. Try placing your arms behind your head for a few counts. Once you have that down, try lifting your arms straight up above your head and doing a few reps that way.
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Step 3
Pivot on your elbows. As you come up from the sit-up position, pivot to one side or the other on your elbow. Alternate sides to get a complete workout.
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Step 4
Change up the legs. Instead of bending your knees, put them out flat in front of you and do sit-ups that way. You should pull your legs in with each sit-up and then let them back out again with each repetition.









