This routine has 4 ab wheel exercises performed as a circuit. Do 3 sets for 10 repetitions with 15 seconds between exercises and 60 seconds between rounds.

This routine has 4 ab wheel exercises performed as a circuit. Do 3 sets for 10 repetitions or a 30-second isometric hold with 15 seconds between exercises and 60 seconds between rounds.

This routine has 4 ab wheel exercises performed as a circuit. Do 3 sets for 10 repetitions with 15 seconds between exercises and 60 seconds between rounds.

This routine has 4 ab wheel exercises performed as a circuit. Do 3 sets for either 10 repetitions, timed sets, or an isometric hold with 15 seconds between exercises and 60 seconds between rounds.