Ultrasound energy (UltraShape). This type of treatment uses ultrasound energy to break down fat. It is the most time-intensive of the four types, taking approximately one hour per treatment session. Instead of hooking you up to a machine, a technician will move the device around manually. It uses a mechanical vibration to break down and destroy fat. This works on the abdomen and isn’t meant for other areas, Dr. Khetarpal says. There is no discomfort, she says.
Signs of a sharp instructor: Instructors should tell you to use moderately heavy weights so that you don’t do more than 15 reps per set. Watch out for instructors who do dozens of repetitions with light weights: You’re not going to build much strength or tone that way. The instructor should correct your form and remind you where you should feel the exercise. Watch for a warm-up and cooldown, too.