Yes, a motor is pulling you along, but that doesn’t mean this isn’t a challenging sport. Waterskiing and wakeboarding take core and upper-body strength. It will tax your lats, back, quads, and shoulders in a serious way. We promise newbies will feel it the next day. It melts mega calories too. According to Kendra Coppey Fitzgerald, a personal trainer based in New York City, waterskiing and wakeboarding can shred more than 500 calories an hour.