In this video I perform a core superset, or back-to-back exercises that work the same muscle group.
On the first exercise, start in a plank position with a slider under your feet, slide your feet toward your hands to form a peak and return to the planking position, then repeat.
Next exercise is an ab crunch on a dyna disk. Start by sitting on the ground, lean forward and place the disk under your lower back, then begin crunching. Note: do not let your glutes or your back touch the ground!
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