Sweatfest is generally a longer, CrossFit-style session built around pairs and team work. Expect barbells out, a bigger grind, and a workout that leans into the shared-suffering side of training, exactly what the coach has planned for the day.

If you like training alongside someone else and pushing each other through a longer session, this is the class for you. It's one of the best ways to build real camaraderie at Celtic, since you're relying on a partner or team to get through the workout together, and the format changes week to week so it never becomes predictable.