Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: chest presses are they affective
Document: I am very pleased with my Total Flex Gym. This gym is great for getting back into shape and for creating definition. I do however wish there were more exercises for the gluteus, but other than that I am very pleased. I even break a sweat while using this. I can feel the muscles in my stomach tighter (doesn't feel good right now). I have noticed and others have noticed that my chest looks perkier and my arms are more toned.
this sux.. i think this is for old people.. cause u cant tone anything with these resistance straps they have and tear off.. even if u use all 3 straps together
this is a very good piece of fitness equipment for the money....easy to set up and use right away....I love it
and they make the machine less compact.I only got this because it was the only gym machine I could find that would ship to Hawaii, and I feel horribly judged working out in a  public gym. But I have no regrets. I'm a pretty skinny guy, about 135 lbs. This thing is perfect for me and my goal build. I've just wanted to get a slim and muscular build with it. Not GI Joe status. but like 170lbs at most.
You'd have saved hundreds by not having a gym membership in that time, and if you do decide to start up a membership, you'll have a physic you're not embarrassed of in the gym.I deducted one star because after a month the frame got a bit squeeky. Tightened the bolts and it went away. (edit)I gave the star back. Now that i think about it, it doesn't seem like enough of an issue to lose a whole star.
When I purchased the Thane Total Flex Home Gym, I was looking for something that didn't take up a lot of room and I could put away if necessary. This is exactly as advertised. It is easy to assemble (I have no patience...so that means something) and it offers a number of exercises that you can do while watching television. It's not gonna turn me into Arnold Schwarzenegger but it can help tone your muscles and keep you in shape.
What a great home gym. I am using to supplement in between gym days. Gives a really good workout and very easy to use
Was looking for a versatile flat bench to use with dumbbells and saw this. It adjusts so fast with a simple mechanism it's kind of spooky. I am over 6' so the upper back/shoulder support is a bit undersized for me but for my 5'7" wife it fits her nicely in all the exercises. She especially likes the lower body and leg exercises. I use mostly free weights but my wife loves the built-in band resistance.
Very easy to set up and move around. Plus it comes with an awesome folder with tabs and pictures of all the exercises you can do. There are exercises you can do that are not even included in the folders. With this set, I don't have to worry about hooking up stuff to my doors and bed anymore, as it has exactly what I need to stay in shape.
Unless you are using P90X or Insanity of course! The exercise chart is high quality! I was expecting this folded poster-sized paper that you hang on your wall with tape. NO! This is a heavy duty large calendar sized chart. It has individual tabs that target different areas. (Core, Upper Body, Lower Body, etc). Each tab can be moved to the front and it will be displayed easily through the plastic protective cover.
Answer: no