The TRX is my absolute FAVORITE tool for working my core. Take any plank exercise, incorporate the TRX, and you've got yourself an incredibly challenging workout with unbelievable results.

This movement is the exact reverse exercise of yesterday's Hump Day Booty Move: the TRX Hip & Booty Blast. Flip yourself over into a low plank for today's Hip Abduction to a Knee Tuck and you'll keep your body balanced and strong - while working your glutes and core like crazy!

Notes on form:
- Lock out your knees.
- Press your shoe laces firmly down into the strap.
- Use your abdominals to pull your hips up to shoulder level and keep them there.
- Only open your feet as far apart as you can without turning your knees outward or letting them bend.
- Lift your hips upward as you pull your knees into your chest.
- Keep your hips at shoulder level as you extend your feet back to your starting position.

Perform for intervals of 30-60 seconds or 10-15 reps for 3-4 sets.

Share when and how you incorporate these movements into your next workout on Instagram/Twitter @cassiebstrong #BStrong!

B Strong,

Cassie B.