I just picked up the TRX Rip trainer last week and have just begun fooling around it. One of the first exercises I’ve done is using it with a reverse lunge pattern to get some core stability work in. Where’s the core stability component? By resisting the rotational pull of the Rip Trainer as you perform the lunge pattern you’re getting some anti-rotation work in. Take a look.
Stay tuned for some more RIP Trainer exercises.