Do they work? Pro's and cons?? I don't want to waste

>>35696515
Do you practice for an activity that will take place on a mountain? No? Than no.

>>35696523
You're new here aren't you

>>35696536
he is a big guy?

These things got debunked like a minute after they were put on the market as far as I remember, don't quote me on that though. That being said though, it's most definitely a gimmick even if it works.

>>35696515
Making it harder for you to inhale is not the same as inhaling thinner atmosphere.

Jeb Bush

>>35696569
>>35696515
This. You're breathing the same amount of air in higher altitudes as in sea level except there's LESS oxygen in the former.

>>35696515
it dones't do shit. If you want to mimic the altitude mask for cheap, breath through a straw. same shit.

>>35696515
They work about as well as breathing through a straw, and look just as stupid.

You are actually making it harder to work out, What I mean is if you were to try to become a better driver, would you shatter your windshield to make it hard as fuck to see out of and turn the heater all the way up in july.
You are making it harder In a non productive way

>>35696523
>than

pros:

big guys use them
people will probably start caring for who you are

cons:

looks extremely painful to pull off

>not just living at 7500 feet to begin with

Never gonna make it lad.

File: 1450324486948.jpg (23KB, 372x339px) Image search: [Google]

23KB, 372x339px

>>35697721

If restricting the amount of red blood cells your body recieves during working out helps, then yes I guess so.

>>35696515
The work really well for spotting retards at a distance. Id also recommend wearing Ed Hardy or MMA branded clothing, getting a powerband and a bluetooth for your mobile