The Dynamic Angled Resistance principle allows you to lift as little as 5% and as much as 100% of your body weight. The difficulty can be adjusted instantly by shifting your body forwards or backwards (depending on the selected exercise and desired level of difficulty). In addition, you can change the height of the accessory attachment on the D-Ring Quick Clips to increase or decrease the level of difficulty. For example: when performing a push-up, having the Handle attached to the bottom D-Ring with the Main Straps hanging straight is the most challenging. If you clip the handles to the 2nd or 3rd D-ring, there will be less resistance (your body is now progressively positioned less parallel to the floor).