Keep your fluid levels topped up
Get into the habit of taking on fluid regularly, whether you are out on the road or not. Water is essential for carrying nutrients around the body and for regulating body temperature.
Being dehydrated can lead to a significant drop in performance so make sure you get enough water on board. When the weather is really hot try popping a hydration tablet, like SiS GO Hydro, into your water to replace those electrolytes that are lost through sweat.