8th Day Gym

8th Day Gym - Functional Fitness is a functional training facility in Grand Rapids founded in 2010 by two-time Olympic qualifier Joe Cebulski. The gym centers its programming on CrossFit, with coached classes that combine barbells, gymnastics, and movement skill to develop strength, endurance, and technical proficiency together. It also offers Hyrox training, BootCamp sessions, and Open Gym access, creating a training environment that supports guided progression, event-specific preparation, and independent work. Operating from a 30,000-square-foot downtown facility and serving more than 500 members, the gym emphasizes athletic, skill-conscious programming and purposeful long-term development.