Don’t wait until you’re thirsty to drink. Drink plenty of water before engaging in any activities. If you wait too late, you could experience cramps, which are a sign of heat-related illness. Remind yourself to drink water frequently with one of the following options. Purchase a durable water bottle or water pack that you can tote everywhere and refill at any safe water tap. Freeze a bottle of water to carry around with you. It'll be solid when you leave the house, but the heat will start melting it from the moment you take it out of the freezer. Wrap it in a towel to prevent water condensation affecting other items in your bag. Download a water drinking app onto your phone. Set reminders, daily targets, and even track when the last time you had a drink.