We all know that keeping hydrated is paramount to keep your body and mind healthy throughout the year whatever the weather!
But during heatwaves and of course, if you're heading off on holiday to sunnier and hotter climes, it is essential that you keep your body topped up with fluids - preferably water! (Some drinks such as coffee, energy drinks or alcoholic drinks, are no substitute for water as they contain ingredients that are dehydrating!)
Our 'normal' body temperature is around 37c but when the weather is particularly hot, the body will sweat excessively to keep the body cool (through evaporation on the skin). If you don't keep hydrated then your body will produce less sweat which will increase your body temperature and your body will struggle to cool down.
So regardless of your level of activity the best thing to do is to drink before you feel thirsty! Drink little and often! The best indicator of dehydration is the colour of your urine - it should be pale in colour; if it is dark then you are dehydrated!