Took this class because a friend of mine had been raving about this new Barry's instructor. The new instructor delivered!! We ran, I mean we really RAN! This was easily the toughest treadmill section I've done at Barry's, not the fastest run, there weren't that many sprints, but we ran a lot. It's different than what I'm used to, but different is good. I loved that Shane told us what was coming in each run (everybody should do that) there were one or two times when I thought that the runs were on the edge of being a little too much but I suppose that's the point isn't it??