So here is the thing, I was happy when thing came in a big box. Once I’d use my strength to get it inside the house I instantly build it up. At first I though it might take a minute and even my grandma told me to wait until my mom gets home to fix it up. But because I was inpatient and anxious I wanted to see how far I could build the machine without extra help. Some of the parts while fixing it up where already in place so it pretty much did some of the work for me, the directions on the paper you don’t need to look too deep into to fix it up. I was able to get it put together by myself without help. So then I’d test out the sit up chair going all the way down with my back and let me tell you I felt the stretch on my lower back and back thighs and it felt amazing. I would point out though that once I’d build the thing up that the very top pillow (thing) for comfort was twisted a bit (probably due to the shipping). But that didn’t bother me once I’d start using it because I’m short anyways lol. That’s another thing I want to point out is that this machine mostly would be for beginners and short people, so if your a big tall person that weight at least 280 or 290 something pounds you might want to rethink getting this. Again I was wondering if I would feel anything using the set up and leg part and after some reps and turns out I did. I did 20 set ups each four or three times and already the next day I could feel the tightness within my lower stomach. Same with the legs after some reps as well. However, when using the leg part I knew that I would have to set it on the highest resistance because I would not feel anything from the first set. Now with the extra silver metal bars for the back you would have to see for yourself how many bars would work for your set ups. I say this because right now I can only use two bars for my set up because I’m a beginner but what ever works for you, go ahead and test it out yourself. If you are a beginner looking for something simple to help you loose stomach fat and some weight you could get this but to be honest this would not be for everyone due to the fact that not everyone is the same weight, height, and/or healthy so just do research before getting any workout machine, I mean I am going to use mine and I’m grateful to God that it came and that it works but for anyone else who might want to use or try out this machine for their fitness journey I can’t speak on that.Unable to adjustPensaba que era más robusta pero no fue así, es una máquina sencilla y no creo que genere gran resultadoDoes help with ab and core workout, but not very well constructed, will not hold up for long.I bought this Ab machine thinking it would make an impact on my abs and get me off the floor. But you just rock back and forth, though it comes with resistant bands. You don’t feel the burn of your abs after you work out or anything. Still had a stomach no change though I changed my diet and routine and got serious about getting in shape. This was a waste of time and money.After I contacted the seller about the product being broken in less than few months, the seller sent me a replacement product. Hopefully that will last longer.Easy to assemble, couldn’t use the instructions since they were so small.Had a similar one and it was great for weight loss and absBought the item was not able to use it right away due to our home being renovated when we did open the item put it together the same metal part in all the reviews was broken and I was unable to use the product reached out to The Cellar and they completely failed me and said there was nothing they could do but give me $20 in a refund what a slap in the face please read the reviews before buying this product they are accurate this item is defective if I could give zero Stars I would