According to research, people who take afternoon naps usually have lower risks of dying from heart-related diseases. This research contends is because the naps reduce the stress in working people by giving them enough rest. "Those who took naps of more than 30 minutes three or more times a week had 37% lower risk." (BBC)
This man well understands the importance of afternoon naps.
Thus, in the midst of extreme heat, he puts himself down to the much needed nap.
And look how equipped he is to fight heat! Marvelous!