Gymnasium can be traced back to the Greek word gymnazein, meaning “to exercise naked,” and further to gymnos, meaning “naked.” Ancient Greeks would not wear clothes while training or competing, essentially getting buff in the buff.

BRITANNICA.COM

Can You Really Sweat Out Toxins?

You’re in your weekly yoga class, inverted and stretching out your body as piped-in sitar music plinks soothingly in the background. Concentrating, you ease further into the position. A drop of sweat slides down the bridge of your nose and pools on your yoga mat. The instructor croons, “That’s