I have never done that before. Stepped out onto the sandstone patio to turn on the sprinkler - give the roses a drink, began to notice pain in my foot - then found myself running for the shade.
OWW!
Doubt I did much damage, it's not like it's 110 over here or something, but the sun beats on that patio all day long and it has been in the upper 80's all day. So I'm sitting at the computer resting my foot on a frozen bag of peas.