This is a continuous workout to keep your heart rate up while strengthening and sculpting your muscles. This circuit moves from one exercise to the next alternating between upper body and lower body exercises. This workout will lead you through the first circuit set. Equipment Needed: barbell/squat rack or set up for inverted rows and barbell pushups, a weight plate or 2- 3 inch platform for calf raises, and one kettlebell or dumbbell.