Did you survive orange theory hell week 2023? Tank top or it didn’t happen!!! Orangetheory Hell Week is an intense, signature workout event held annually at Orangetheory Fitness studios, typically around Halloween. It involves a series of challenging workouts designed to push participants' limits, often with themed workouts inspired by scary movies or concepts. Members who complete a certain number of classes during this period, traditionally five workouts in eight days, earn a commemorative shirt or tank top, such as the one shown in the image.