Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: How much do you need when traveling to higher elevations? (is one can enough for 3 days in Peru?)
Document: Worthless, mouthpiece is bad don't get anything from it. I had much higher expectations Maybe in diar need you may get what you need who knows.
It might help some during heavy or aerobic exercise.I do wish the cans had a meter. I'd pay more to be able to tell how much, if anything, is left in the can. It says "up to 150" puffs, but what does that mean? Quick little puffs don't do much at all for me. I hold the trigger open for two or three seconds, enough to really fill my lungs, and do this at least 3 times.
Pretty good, just didn't have enough to last. But compared to others is better than most for the price. I would buy again just two instead of one.
Maybe I don't need extra O2, but I can't tell any difference. I got it because we get bad ozone days where I feel like I can hardly breathe but it didn't seem to make any difference.
We made it about .75 miles and climbed about 300' and he really slowed down and complained he couldn't breath very well, pretty much what I expected. I got out a can of O2 and he took 2-3 breaths every 10 minutes or so and we were able to climb up through steep rocky moraines to our base camp at 11,000'.
I have been in the business of selling oxygen for13 years and can tell you thousands of stories where oxygen helped and did not help. In most cases it helped. For those it did not help, they were not oxygen deprived and did not need the oxygen, or the benefit was so small it was difficult to measure. My self, I am over weight and had just walked thru all 3 mega buildings of the Las Vegas Convention Center and my legs were throbbing with pain.
Not Happy At All At the Volume of Oxygen in the Can! Literally Lasted 2 days taking maybe 5-10 puff a day for  total of 20 puffs! The effect was very mild too. I wanted to believe it would work, but I think oxygen therapy is best through a real machine. I wouldn't waste your money, unless you get the small one in case you are flying- then maybe you could tell the effects.
I unwrapped the plastic and tried this right away. I did read the instructions first and follow them carefully, not prolonging individual inhailations.I have as much success inhaling outdoor air on a clear day. I wanted this to work, but it didn't. And after about 3 different tries, it was totally empty. I was so unhappy with this product that I kept the can to help me remember to leave a bad review- which I rarely do.Did I get a bad can? I don't know.
I use for occasional trouble breathing. Keep it by your bed and one in your car. I'm so much more relaxed, knowing I have it there.
need a way to secure the release trigger. It was in my bag and the whole can got depleated becuase the tigger was triggered accdenatliy. Also mybe a mouse peace like sonrkle type would be much better.
Answer: no