Chris Grayson has assisted with my strength training on and off over the past couple years. I wish my schedule allowed me to see him more frequently. The workouts are challenging, always have a good variety so you do not get bored, and it is amazing how fast you will see results if you put in your part. The best part about USI is that your workouts are tailored to your goals and physical restrictions. As a grappling enthusiast, it is always nice to have your training partners comment on noticeable elevations in your strength.