What a bunch of crap. Geez, one day something is vital and good for you..the next its too risky, no good 'They Say'...Is it any wonder the general public loses more and more respect for these so called experts? Almost any good athlete knows, or should his or her own body, and its needs. Do what suites it best. Uhg...

Spoof:
Ah....yea hi, we are the experts at XYZ medical and/or University...and we just found out through exhaustive study..using your tax dollars..that breathing too much clean air is NO good for you! So, ah until we know more...stop breathing so much. Thank you.