If you want to keep your body cool…

Drinking lemon water in summer does not cause digestive problems. It is also beneficial for the skin.
Drinking a glass of vegetables will help to control body temperature.
Soak fennel in water overnight. This water in the morning Strain it and drink it with some black salt and honey, it will help keep the body cool.
Drinking a glass of water with fresh mint leaves will be beneficial for the skin.