Q5: What about hot surfaces such as asphalt?
Summer is a wonderful time to get outside barefooting, but the hot midday sun in many parts of the U.S. or other parts of the world can sometimes be so intense that it heats up certain surfaces to the point of being not only uncomfortable, but having the potential to actual burn or blister the soles of our feet if we’re not careful. The surfaces where that’s most likely to happen are asphalt, bricks, and even sand on a beach.
Most of the time, these surfaces, if we encounter them, are relatively small in area, and can be traversed by walking quickly or even running from one shady spot to another. In parking lots or at street crossings, the white painted lines are almost always cooler than the other surfaces, so walking on the lines will usually help.
The important point here is to be aware that such areas may exist in hot weather, and take appropriate measures to not let our feet get injured from being burned.
Many barefooters have found that as their soles have become thicker and tougher, they are much better able to walk on relatively hot surfaces than they could when they first began barefooting.