NEW YORK (Reuters) - Mini trampolines, the go-to fitness tool for people seeking a joint-friendly cardio bounce, are also adding spring to the push-ups, planks and lunges of boot camp and interval ...

"Yes, you're tired, but you have to hold yourself accountable." Needless to say, the boot camp is popular for a reason, so we talked to Sims about her unique approach to designing the circuits and ...