I started using this product because I was going to a gym and using a very determined personal trainer. At 67 years old I was lifting weights, doing the treadmill with an incline of 5 and at the speed of 6, and doing core exercises of balance, planks, and abdomen. Unfortunately my trainer moved on. I was amazed during that year at what I was able to do and how fast I was able to increase in weight and balance, and I believe this is partly due to the product, and partly to the trainer. I’ll let you know!