Sip green tea or drink onion juice because of their ability to beat the heat and provide relief from summer ailments. Drink at least 8-10 glasses of water a day. Water is the best drink as it doesn't contain any sugars that can add up to unnecessary calories. For a change, a lemon and honey drink can also instantly replenish your body's lost fluids and work as an energizer. Restrict outdoor activities to the cooler parts of the day early mornings before 10.30 am or late evenings after 5.30 pm. If you're a non-vegetarian, you should limit red meat and instead go for fish and oysters.