Put it on ice
Finally, having considered how we can adjust our physiology during the lead-up to competition, the next step is to keep that rising core temperature at bay when we compete. Drinking more to replace sweat and improving our sweating ability is great in dry heat. But in the 80+% humidity of Tokyo, the evaporation of sweat, which is the bit that actually keeps us cool, can be difficult.
The science here tells us that we want to reduce our temperature as much as possible before we start, this allows us greater room for our internal thermometers to increase once we start working. GB Rowing are reported to be using ice vest and bracelet technology to create this gap in temperature.
Research review: Does aerobic fitness help beat the heat?
For us this can be as simple as placing our hands into cold water before we compete. Our hands have a very high surface area so make them perfect for rapid cooling using a technique like this. Similarly, cooling strategies during our events as we saw in the triathlon where athletes were sprayed with cold water and given cold bags to put on their pulse points can help.