- I have trained with Preston for a couple of years now and I love my workouts. Preston keeps me motivated, keeps the workouts fun and challenging, and I work much harder than I can by myself. I am over 50 and feel stronger and fitter than ever. While I consider our training an investment in my long term health and fitness, (through increased muscle tone, bone strength, aerobic fitness and injury prevention) it is a huge bonus to feel good about the way I look. I actually get compliments about my arms when I wear sleeveless!