Short on time? Use this quick circuit to torch calories double time. The workout will hit every major muscle group and done at the required speed, will have your heart rate above 90% for most of the 20 minutes.

Olympic bar
Bumper plates
Squat rack/pull up bar

Deadlifts x 12 reps
Barbell Roll Outs x 12 reps
Hang Clean x 3 reps
Front squat x 12 reps
Pull Ups x 12 reps
Biceps Curls x 12 reps
Overhead DB press x 12 reps
Burpees with a Push Up x 12 reps

After all exercises, rest till HR drops to 70% then start again. Do as many circuits full or in part until the 20 minute timer goes off.