Question

We feel tired being out in the sun for a long period ? Why

Answer 1

This is partly because your body is working hard to stay cool and partly because you may be losing fluids and salts through sweating. Fatigue is one of the primary symptoms of dehydration, which can increase your risk of heat exhaustion.

Answer 2

Extreme Heat Makes You Tired. Extreme exposure to the sun can cause dangerous dehydration because your body is sweating and you are losing water. ... Extreme heat can also cause heat exhaustion.