It's not just the electro-magnetic field, it is also the fact they don't breathe well and with constriction and sweat comes stank...not fun.
Most commercial yoga mats are also pretty useless for a yoga practictioner. You could use a good fabric mat over your rubber yoga mat...or you could just use the fabric mat. Who wants slippery sweat under them while they're in cobra pose or corpse pose?
Whew, for a moment there I thought the purpose of yoga was to wipe out the synthetic fibers industry.
yoga pants.....it's part of an industry telling people that they need 3 297 accessories to meditate and stretch.... It's like martial arts. Guys will pay hundreds of dollars for the latest synthetic fibre gussetted 'gi and they can't fight for shit. Or the idiot who wears driving gloves to take his kids to school. Don't look like you can do it. Do it. And without Nike, or any other corporate hanger-on purveyor of overpriced sweat-shop produced merchandise. /rant
I'm pretty sure these "yoga pants" take the place of sweats or those flannel pajama bottoms everyone wore for a while. My daughter changes out of her scrubs into the yoga pants every day after work.
And Hipforums. Is she a doctor? And thank God, I don't know anyone who wore flannel pajama bottoms. Wtf.