Private Training One-on-one training is a great place for youth athletes to start if new to strength training, seeking a little more focused assistance and personalized programming, or if returning to activities post injury. One-on-one training is also preferable to adult athletes seeking out a personalized strength training program with a trainer providing constant assistance and guidance each workout session. SNF specializies in strength and sport performance based goals and serves youth athletes 6th-12th and adult athletes college age+.