This is the last day of the challenge and it says HANDS.
There was only one son at home when I got my camera ready and he had already washed his hands (even if it doesn't show).
This last week he has had black hands every day when coming in from the garage. I think he climbs inside of the motor's he is working on! That's his profession also so you can see why he has a hard job to get his hands really clean.