Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: I have a different breath trainer, the smaller plastic kind.  Works well but it leaks saliva.  Does that mask have any issues leaking Saliva?
Document: I originally bought the mask as a trainer for when I run to help get more efficient. I then started using the product during my crossfit workouts. I believe the product does what it says, I'm no professional in the the sports/medicine field so I can't provide scientific finding saying it works. But I find myself not running out of breath as often when playing basketball and other sports when I'm not wearing it.
I have use it for the pass 2 weeks here in Bagram Afghanistan, I use it every night for about 1/2 hour doing the workout in the book. I have found it easier to run with less offered. I breath better. It does take some time to get use to. But well worth the money. I am at 4700ft above sea level now and have the mask set at 9000ft.
I am training for some triathlons that I am running this year and bought this to help push me a little farther. Overall, it works great! Restricts my air so that my lungs actually feel like they are getting stronger! My only problem is that the mask doesn't seal really well around my chin due to my beard. I could just shave, but I kinda like my beard...
Works great, big difference in my cardio I would advice that you purchase a smaller size for a tight fit.
I was skeptical when I first purchased this item however after a few weeks of use I can notice a significant improvement on my cardio when not using the mask. Well worth the money to help improve a workout that is restricted by a tight schedule.
Purchase the mask. Had low expectations at first. How I was wrong. Great supplement to your cardio workouts by forcing you to maximize every breath. The mask isn't just for mma. Only limited to your imagination on how you use it.
This mask really makes you work for each breath. It takes a few minutes for the panicking to subside but, after you settle in with breathing, it makes your workouts intense.
it's a toy....but a FUN toy. I do not believe it will make you stronger or prepare you for the alps, but it will give your workout a challenge. I have a small head and ordered the SMALL. It fits perfectly, but it does allow AIR to come in through the corners of my mouth, defeating the purpose of the mask (the bigger size (MED) was worse). I have it on the hardest setting and it is still pretty easy to breath...even when doing pullups, pushups, or jumping rope.IT's A TOY...but a fun one.
Not sure about all the claims, I have been using this mask twice a week doing HIIT on the Versa Climber for the last few weeks, I feel that it is making a huge difference in my breath control and my breathing recovery after intense execise. I certaily sweat alot more when wearing the mask, and I am not sure but it seems like I go to sleep and sleep much more soundly on the days that I use the mask, this is very interesting because i will work out around 0530 and go to bed around 930 at night.
I love using my training mask. It fits great and works awesome.. And when I ordered it I received it pretty quick which great
Answer: yes