avoid eating junkfoods, eat fruits and vegetables
Depression, loneliness, or sadness can cause overeating. Depressed, lonely and sad people tend to eat a lot because they probably think of food as their comfort. They probably think that eating can help them to minize the sadness they're feeling.
I think the correct answer is letter A. Take constant breaks under the shade. because I think drinking water isn't enough to keep your body in a normal temperature.