This exercise is a simple ab exercise that can be done almost anywhere.
Start this exercise by lying on your back on a mat. Your arms should be straight and pointing towards your legs, both reaching straight up towards the ceiling.
Exhale and slowly fold your legs and arms back down to the mat making sure that your abs are tight.
Straighten out as flat as you can without touching the mat with your arms or legs, and slowly return back up to starting position for one rep.
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