Use your air conditioner.
No air conditioning then put a bowl of ice in front of your fan. If you’re using a basic fan, this can greatly increase its effectiveness.
Keep a spray bottle of water in the fridge. Spritzing yourself then provides a fast way to cool down..
Keep the curtains drawn. Keeping the sunlight out is more effective than opening the windows, especially on still days.
Take advantage of public air conditioning. You don’t have to stay at home: head to a shopping centre or a public library to take advantage of cooler temperatures.
Drink plenty of cooling liquids. 8 glasses a day of water is essential.