I work near Chinatown in San Francisco, and I see people squatting at the bus stop, outside the market, playing chess. I know this is the default rest position for a lot of cultures out there, and from what I've read, you're supposed to be able to do it for hours without getting tired or sore. It seems to me that it's a more natural and probably more joint-friendly position than sitting in a chair or standing.
The problem is, I can't do it. I've tried. I just can't get my heels down without falling backward. I feel like the major strain is in my calves, but a couple months of stretching after exercise (cycling) and in the shower hasn't improved things. What am I doing wrong? And if you're lucky/talented/flexible enough to do it, do you notice that it's easier on your body than sitting in a chair or standing at the bus stop?