45 minutes cardio Workout
You heard right — this circuit cooks, and you ll have the skinny to prove it. We dared top Hollywood trainer Jeanette Jenkins to design a routine that would fry your ass and firm you fast. Result: You ll melt about 500 calories doing her mix of multipart toners and kick-butt cardio. We know, because we put it to the test. Jenkins, who trains A-listers like Kelly Rowland, Pink, and…