Are you ready to take on the 300 Challenge? Do this exercise every other day in addition to cardio or strength training.
30 crunches
20 bicycle crunches
30 toe touches
20 reverse crunches
15 side plank hip lifts (R)
30 crunches on a bosu ball
15 side plank hip lifts (L)
40 Russian twists
30 bicycle crunches
15 swiss ball jack-knives
20 windshield wipers
15 crunches on a bosu ball
20 russian twists
