Density circuit using the AMSAP model doing As Many Sets As Possible for 15, 20 or 30 minutes. Keep the weight moderate to heavy but do not compromise your form and technique. This workout is a HIIT and strength endurance which is great for building lean muscle, getting strong and burning fat. This is challenging but a great way to change up your regular routine with a workout that gets results HIIT and Strength Workout Perform AMSAP in 15 min of the following: Barbell Deadlifts – 10 reps Plyo Push Ups – 10 reps Goblet Squats – 10 reps Swiss Ball Jacknife – 7 reps