My politically correct post for the day.
The gym where I workout is extremely well planned. The weights are behind the aerobics equipment, so while you are lifting you have a great view of women in spandex climbing steps on the stairmaster. This provides excellent motivation for frequent long, hard workouts.
Real Science 
There are also positive benefits to having the air conditioning break down.
The benefits of a gym membership.
I need to change gyms.
You won’t be happy with a Sharia conforming gym.
Stay away from those.
Like this one:
http://creepingsharia.wordpress.com/2008/02/26/harvard-gyms-go-sharia/
How easy is it when your blood is all in one place?
Most of those women in spandex are carrying a lot of cottage cheese. Sometimes it looks like two hairy nosed Wombats trying to escape from a hessian bag. ……….At least in my gym.
Colorado is the thinnest and fittest state.
I live in Colorado. Just shows you how bad the state of the nation is.
Thin is unhealthy and fitness involves excess oxidation. Weights are good but running and biking age the hell out of you.
I’m almost 60 and I run circles around college kids on the soccer field
The PC Police will arrest you for such a heteronormative remark.
Now if they could power the lights in the aerobics room from generators in the stationary bikes…
Now back to the science. What do you reckon the CO2 ppm might get up to in your gym? Has anybody died from the increased level?