Level 1Your heart rate won't go past 80% of max very often. These classes are not cardio intensive and can be completed by all fitness levels fairly easily.

Level 2You can expect to break a sweat and be breathing heavy at times. You'll definitely be sore after your workout but you won't be drenched in sweat!

Level 3You're working hard now. Expect to be pushing towards max heart rate often and incorporating full body exercises. You might be feeling this one for a few days after.

Level 4Bring lots of water, make sure you had food a couple hours before working out, because you're gonna need all the energy you can get. You're going to be pushing towards your max heart rate for the majority of class. Any combination of calisthenics, weights, and high intensity interval training will be used to get you there!