Double Duty: Strength-Training Moves That Get Your Heart Rate Soaring

Squats are a go-to move for toning the legs and butt, and adding an explosive jump to the mix will keep the heart pumping while also giving the quads a little extra love.

• Stand with your feet shoulder-width apart.
• Start by doing a basic squat. Then engage your core and jump up explosively.
• When you land, lower your body back into the squat position to complete one rep. Land as quietly as possible, which requires control.

Since adding a jump to this exercise can put more strain on your body, make sure to use your whole foot to jump, not just your toes. Keep your knees behind your toes to avoid back injury.