The hot weather continues and keeping cool can be difficult without useing the air conditioning system,
Here are a few methods you can use,
Hold a cold drink can or bottle on the back of your neck it cools the blood to the brain very quickly.
Wet your wrists and other pulse points with cold water. Use a piece of ice wrapped in a face cloth, to continue after the coolness wears off. Constantly cooling off the wrists will also cool off the body. Never use just ice; make sure it is wrapped in a towel or something similar.
Put on a tee shirt that is has been wet with cold water and wrung out.
If you're in a situation where you can go without clothes, this can be the most comfortable, natural way to stay cool.
Do not use a fan to wave air past your face and neck. Contrary to popular belief, the activity created by waving actually burns calories and raises your core temperature.
Smaller meals with less protein will reduce metabolic heat. Whatever you do eat should be cool and not require heat (or much heat) to be prepared (e.g. salads, sandwiches, etc.) But be sure to eat something, even though the heat might spoil your appetite.
It's no coincidence that many people in hot countries of the world eat spicy food. Spicy (hot to the taste) food increases perspiration which cools the body as it evaporates.
To me its a lot easier to keep cool, than it is to get warm.