Thickness: Yoga mats come in every size from paper thin – you might as well just buy one that looks like wood planks – to super plush. The fluffier your mat, the kinder it is to your knees, back, head and elbows. Unfortunately it is also that much harder to roll up. I’ve seen people so devoted to their comfort that they give up on rolling up their mats and just walk around looking like they’re carrying a piece of dry wall (with leopard spots!). Also, in case you missed all the “breathing through the pain” admonishments, yoginis are not supposed to be wusses so unless you’re pregnant then I’d better see headstands on the hardwood people.