This product is great. It does what it says it will do. Assist you while doing pull-ups. I used to be able to 20 pull-ups in my 20’s but spending 20 years relatively inactive I’m lucky to get 1 unassisted pull-up. I’m now able to focus on form and hopefully not damage my shoulders or ligaments. Even doing dead hangs I felt I was straining and may be damaging something. I’m doing 5 sets of 5 so now feel I’m doing pull ups properly without straining and getting that muscle memory going. I have a whole set now so can progressively reduce the assistance. I recommend this product but make sure you get one that matches your body weight. I went for the highest and found it to be too strong to hang properly.