Some exercises include leg raises, jacknifes, Swiss
ball side crunches, side bends, Swiss
ball crunches and hanging leg raises. The Swiss
ball will use more ab muscles. Do each one of the exercises consecutively for 15 to 20 reps with no rest in between. Then take a 60-second break and do them all again. Repeat the whole circuit four to six times.
Perform cardiovascular training three times a week every other day. Some examples are running, biking, stair stepping, swimming and rowing.