It’s the ultimate outdoor cross-training workout! This unique 90 minute session combines muscle-building, land-based circuit training with the fun and excitement of SUP or Stand Up Paddleboarding, a fun, fast-growing sport that also happens to offer one of the best core workouts around. Sessions begin with a warm-up including a light jog/walk to the river, or ocean and then you’ll literally walk on water with 30 minu …