If you are looking for quick results completeBURN is a great choice. They use interval training to improve your endurance and melt fat. For a limited time, this program has partnered up with Mondrian LA. They also let participants try out MIO heart monitors. According to Adidas’ fit-consultant, Leah Purcell, it is optimal to bring your heart rate up and down throughout the workout and the monitor “eliminates the guess work.”