Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: can I run  real fast on this machine ? Thanks
Document: I have two bad knees and have trouble walking. Once I got the swing of getting on and off and then gliding. I am doing OK. My stamina is not great (two minutes starting) I am slowly increasing my time. My wife is also using it now. She started out with 5 minutes. It is harder to use than it shows on TV but it is worth it in the long run.
I am a male in my early 50's, over 6&#8217; tall, a little overweight and was looking for some kind of home workout option through which I could start trying to achieve better health. I am a fast walker, but found that walking for 30-40 minutes didn't really make me feel like I had accomplished much. Running is out of the question because after a few days of it my knees start bothering me.
It's a good machine for the price though and exactly what I was looking for.
I really like the gazelle. It's a perfect low impact exercise machine for me. Some of the hardware fasteners were missing but other than that its great
The only reason I am not giving the Gazelle 5 stars is that the fitness computer/monitor is defective and not registering anything but pulse. However, I called the customer service number in the manual and they are shipping me out a new one. Will leave a further review if there is a problem with the next one. Overall, I am very pleased with this machine.
However ironically the wire guard caused friction that ended up severing the wire for the BP monitor. They didn't make the warranty claim easy, several contacts to get to the right person, I had to call to restart the process again once I did get the right area but finally they did get the part to me to fix the machine.
I could lean way forward and way back to try to get more out of it, but my heart rate would rarely exceed 100pbm.I researched the Gazelle Supreme and felt confident it was going to be the right machine for me. I was not disappointed! Amazon had it to me within a week and I had it assembled within the hour. Great instructions- crappy tools.
Received promptly. My son put it together for me while I was at work so I can't attest to the ease of assembly, but he did refuse to work out on the machine, said he got his workout while putting it together. It is a very substantial machine not flimsy at all. Does fold easily but is a bit on the heavy side because it is so substantial. My worry before purchase was whether or not the hydraulic pistons could be disingaged easily. The answer is Yes and Maybe.
I bought this item because I was in the market for a home exercise machine. I'm a large man, so I needed something that would support my weight. I wasn't willing to pay 800-1000 dollars for an exercise machine that could support my weight (295). So I came across this Gazelle my aunt recommended me. I saw that it had a 300 weight limit and it was only 280 dollars.
Assembly required, two people make it easier, but I did it myself. Not rocket science but allow an hour.My nutritionist recommend it. The digital timer is useful, the machine is simple to get on and work out. It can be moved (I already put it in the SUV and drove it somewhere else--but get a helper for this). It works, the price is reasonable, the product is sturdy. Not fitness club equipment, but totally suitable for home use.
Answer: yes