how do you tell if it’s a good frame? rip trainer: uses a sports cord and a bar to develop muscles throughout the legs, core and upper body, burning up to three times more calories than with core exercises. the only downside to this pie is that it needs to rest for a few hours after baking to really set up–the longer the better, really. you may not want to take advantage of this option if you’re already on your sixth cup for the day, though. it starts off with going to nursing school and graduating. 