We sweat to cool our bodies by evaporation, but when we wipe the sweat away – a natural reaction in humans – are we defeating that function and making ourselves hotter? Do we also hasten dehydration by making our bodies sweat more, to replace what we’ve wiped away? In other words, should we just leave the sweat to do its job?
• The damp squib answer is that neither leaving the sweat nor wiping it away will make any difference to how well or badly you keep cool and hydrated.
Why? First, we are constantly sweating, but, by the time we feel it…
