Sculpt your abs, butt, and every body part your bikini reveals with 8 total-body exercises from the fitness pro behind P90X

By Shape Editors

The three-month Summer Shape Up series is back! Your trainer for the first installment is Tony Horton, the pro behind body-makeover blockbuster P90X. To get you bikini-ready, he's designed eight fast-paced, full-body toners, part of his proven burn-and-firm approach. Watch the video above to follow along with the calorie-burning circuit, and pick up the May issue of Shape for the full workout.

Fitness models outfitted in activewear from Macy's.



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