But by the time you’re done, you’ll want to die. I would say its difficulty level is on par with Chest and Back from P90X. This is strictly push ups ( 30 ) and pull ups ( 15 ). It’s AB 200 followed by AB Ripper X, all in one 25 minute abdominal assault. You’re also going for max reps, not the typical 8-12 rule. This is done in a Power 90 circuit format and is a handy one if you’re on the road. For some reason I hate legs training, but this particular one I look forward to. It’s similar to P90X Legs and Back ( sans Back ) with some Plyometrics thrown in. Think of P90 Master Series Plyo Legs, only amped up to the extreme. Here are they all are, and their reviews: “One On One” is a monthly subscription DVD available from. There are about a zillion reviews out there for other workout videos developed by Tony Horton ( P90, P90X, P90X+ ) but few have taken the opportunity to review his latest package of pain, “One On One with Tony Horton”.