CrossFit Stony Brook is the premier fitness studio on the North Shore of Long Island. Voted best on Three Village by Patch Readers it is conveniently located near the border of Stony Brook and Setauket.. CrossFit is an effective way to get in the best shape of your life. Anyone can do it, our community includes kids, teens, college students, moms, dads and grandparents. It is a fitness program that combines a wide variety of functional movements into a timed or scored workout. Its always different, its always fun! Come give it a try!