XRburn, well lets put it this way, a maximum of 1000 to 1300 reps in 25 minutes, that's definitely going to make your muscles burn. If you can't, it doesn't matter, it's about pushing yourself to do as many as you can. In a group setting you'd be surprised what you're capable of.
XRburn is designed for muscular endurance and to ignite your fat cells so they break down and burn all day long. With the potential to elevate your metabolism for up to 18 hours, it's perfect for those looking to shed a few, or lean up.