This 45 minute online workout video is a circuit style, total body strength training routine with core exercises and aerobic intervals to build lean muscle mass and improve stability. This workout uses basic fitness equipment like a fit ball, resistance tubing, medicine ball, exercise mat and foam roller. MyPypeline online exercise videos are an excellent alternative to fitness DVDs. Stream mypypeline.com exercise videos or download a fitness workout to your computer, iPod or MP4 / MP3 player.