20-Minute Dumbbell HIIT Workout For A Total-Body Burn

(And if you like sweating with me here, I hope you'll download All/Out Studio to do my entire program.)Your 20-Minute Dumbbell HIIT WorkoutBefore you jump into the workout, though, it's important to start with a good dynamic warm-up. How to: Start standing with feet hip-width apart, holdings dumbbells at sides. To turn the heat up (even more): Every time you stand back up after a reverse lunge, swing your arms up overhead, then lower them back down by your sides and start your next rep. Complete as many reps as possible in 20 seconds, then continue to the next move.How to: Start standing with feet under hips and arms at sides. Complete as many reps as possible in 20 seconds, then start the circuit again with the first move.