I recently bought the groupon for 10 classes at Jabz. The 45 minute classes are broken into 45-55 second workouts that you do back-to-back. I would recommend not going full force the first session, because you are going to be SUPER SORE the next two days. The instructors are AMAZING! They push you to do your best and make you feel comfortable at the same time. Also, the other woman taking the class that have been there a long time were so nice and encouraging. Great experience all around.