Exercise Device, Muscle Trainer with Variable Settings, Adjustable to Different Fitness Needs, Portable & Easy to Clean（3PCS

This will get your lungs in shape. You can adjust it to make the "workout" easier or harder. 1 warning. If you use it for 10 minutes or more, saliva collects in it and starts running out.

Not a bad product. Encourages you to breathe through your nose if anything. I dial it to just past the point of discomfort which gives an extra edge to my cardio. If you're looking to really push performance though, I'd get a full bane-type mask that covers your mouth and nose. For the price ($6-ish) though, this is much more cost effective for 95% of consumers.

I am sixty-seven years old, in so-so health. I used this product while on a brisk walk a few nights ago and am quote happy that it made me work some. I originally has my doubts con earning the efficacy of the product, but, am no longer in.doubt. I just have to figure out how to use it during water training exercises without drowning.

It works but looks and feels akward

Good

Not a huge fan of this piece of equipment. Got it to see if I could make some cardio gains without actually doing cardio. It works in the sense that it restricts the amount of air you can intake with each breath. However, this does not seem to translate to much in terms of athletic performance for running or swimming in my experience. It also fills up with spit if you use it on a difficult setting for 5 or more minutes. It's cheap and does what is advertised but this will not turn you into an athletic specimen.

It can become a little messy because it also increases your saliva. But I walk daily and was starting to have issues of being out of breath from power walking. Tried this to get back my air and it seems to be working.

Useless. All it does is gather and drip saliva