it was a pound class. >> find that rhythm, guys. >> reporter: yes, that's kate pearson, a character on "this is us" in a pound class. >> take it in, up and in, up, pound. >> reporter: but you don't need to be in a tv show or even travel to l.a. to try this yourself. these women are pounding in the basement of christian bresler's home in great falls, virginia. >> not only is pound cardio but there's also a lot of moves where it's isometric poses and pilates. >> reporter: she plays the drums but when her husband suggested the idea of becoming a pound insuc >> i love that i can incorporate my love for playing the drums along with fitness. >> reporter: the class helped kate get in touch with her feelings. this class is a little more, well, extroverted. and first timers have also been happy with the health benefits. >> i'm actually on a new medication for my heart, and i was taking it really easy, didn't know how it was going to play out. i really enjoyed it. i'm glad i came. i tried it out and my heart, i feel really good. >> reporter: using rip sticks, which are these green, lightly weigh