The three major muscles of the abdomen are the transverse abdominis, rectus abdominis and obliques. The Ab Ripper X, part of the P90X exercise series, is designed to strengthen these muscles, and can burn up to 600 calories per session.
Features
The Ab Ripper X features 11 core-strengthening exercises that amount to 220 repetitions in about a 15-minute session. Because of the constant flow from one exercise to the next, your heart rate is consistently raised, allowing you to burn more calories and fat.
Time Frame
The P90X program offers options for different schedules based on your fitness needs. Some programs call for the use of the Ab Ripper X nearly every day; others feature the program two or three times per week. Combined with a nutrition plan, the Ab Ripper X claims to build tone muscle and burn calories and fat in 90 days.
Benefits
Burning calories through Ab Ripper X results in dropping fat from the abdomen, which lowers your risk for heart disease, high blood pressure and high cholesterol. A stronger core also means better posture and stability and better lung function due to a stronger diaphragm.