Many pregnant women are comfortable sleeping on their stomach during the first week of their pregnancy, especially if they usually sleep on their stomach. But it can become uncomfortable once your uterus starts expanding and you begin to feel like you are carrying a large beach ball on your stomach.
The traditional cycling tourist usually used toe clips and straps, but touring shoes designed for use with clipless pedals are now also common, usually with a recessed cleat so that the rider can both walk and cycle effectively. Touring shoes typically sacrifice some rigidity for traction and add treads.
Ribbed rubber matting can also be much more comfortable to walk or stand on than regular concrete surfaces. Rubber is a naturally elastic material that tends to provide comfort for the feet standing on top of it. Your feet and lower back are much more likely to be free of tension while standing on a rubber surface.