Learn the best way to stay hydrated during heatwaves with our expert tips and top-quality hydration products. Beat the heat with our expert-recommended tips for staying hydrated during scorching heatwaves. Don't let the sun get the best of you. Electrolyte drinks are getting more popular than ever...with their popularity peaking during heatwaves, and its no wonder why! They really do help to stay hydrated. Such drinks can be made from electrolyte powders or tablets and are used around the world by those looking for rapid rehydration.