This go-anywhere express workout can squish a lot of workout into as little as 7 minutes.

7 minute express workout - IMAGE - Women's Health & Fitness

Using your own body weight, high intensity circuit training (HICT) burns maximum fat by using resistance training while working multiple large muscles with minimal rest between sets keeps metabolism high for up to 72 hours and also increases VO2max. Genius.

Rules
The idea is that your lower body recovers while you're doing upper body moves so you're ready to squat like you mean it. Intensity is also shaken up to allow heart rate to decrease slightly every second exercise. The effect? You can perform the exercises in quick succession without compromising form or intensity (or slumping in a corner for four minutes). Perform each exercise for 30 seconds, with 10 seconds between moves.

Click next to view the first exercise.