Did you know that deadlifts keep you young, perfect your posture, and burn a ton of fat, but their benefits sure as heck don't stop there. The Deadlift works more muscles than any other exercise, including the squat. The lift engages all of the major muscle groups, according to exercise physiologist Kevin Farley. If you need to do one exercise, this is the one to do. The Deadlift works your lower and upper body, including your back muscles. The benefits of deadlifting are many and varied.