By the time I get to the end of a workout, I’m tired and it’s a struggle to come up with a challenging abdominal workout. Here’s a quick, five-minute workout you can tack on to the end of a workout or do it by itself on those “I-don’t-have-time-to-work-out” days.

For more abdominal and core workouts, check out some of my favorites:

Ultimate Core Workout

Belly Blasting Workout

Five Minute Abdominal Workout:

30 Sec. Plank Walk Outs

30 Sec. Cross Body Mountain Climbers

30 Sec. Plank Rainbows

15 Bent Leg Crunches

15 Straight Leg Crunches

30 Sec. Plank

15 Side Plank Rotations (L)

15 Side Plank Rotations (R)

30 Sec. Scissor Lifts

30 Sec. Plank