If you’re looking to burn calories, lose body fat, and gain muscle, this 45-minute workout designed by fitness instructor John Kersbergen is all you need to maximize your gym time and effectively lose weight in the shortest amount of time. It combines cardio with strength-training moves, so aside from decreasing body fat, it also tones and defines your muscles. Warning: this workout is fast-paced and will leave you dripping with sweat!
This is a Tabata workout, which is a form of high-intensity interval training (HIIT), which is proven to help diminish belly fat better than steady-state cardio. Each four-minute section of this workout involves eight rounds of 20 seconds on and 10 seconds off. What makes this workout so intense is that it’s long: 45 minutes total! You get a one-minute rest every 12 minutes, so soak it up! Drink some water, catch your breath, walk around a little, and then get ready to rev up the intensity once again.