The concept of lifting weights one day and doing cardio and abs the next is outdated. Instead, metabolic training that harnesses the power of high-intensity intervals and total-body resistance drills is the new standard for torching calories both during and after your workout.
Metabolic training fuses whole-body strength, cardio, power, endurance and mobility work all during a shorter workout. That means the modern, over-scheduled trainee (so, most of us) has the ability to burn fat, build muscle and boost metabolism in 30 minutes or less. These 17 awesome afterburners deliver everything you need for total fitness.