Being stuck in the office, at home, or in an elevator (lets hope its one of the first two) is no excuse for skipping a workout. Fifteen minutes, a floor, and a wall are all you need for a butt-kicking strength, cardio, and flexibility workout. Sit tight against a wall sans chair for quaking quads, or go for some classic lunges to work those hammies. Want to get fancy? A one-legged “pistol squat” will get the heart pounding and the core and glutes in shape, stat.

Do It Today: No gym? No problem. Work on those legs anywhere with squats and lunges — no equipment required.

Limber Up

Work on flexibility anywhere with these on-the-go stretches.

Tough Stuff

Great resources for starting a strength routine.