“I always had this mental block when it came to running,” Karl says. “It just never clicked for me; it never happened. Which is really ironic because I teach running every day.” Like all bootcamp ...

"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 ...

Relatively simple but effective exercises are often particularly popular. Step-ups definitely fall into this category, primarily working our glutes and legs. They also burn calories at the same time.