The Weight of Sweat
Dehydration can be measured by how much fluid you lose as sweat in relation to your body-weight. Low-level fluid losses below 0.5% of body-weight are easily managed by the body, corrected by drinking small amounts of water. But excessive fluid losses beyond 1% of body-weight cause the body to enter a state of hypohydration, also known as dehydration.
Only needs to sweat 750ml to be dehydrated
Footballers can sweat 1 .3% – 4% per game
To maintain optimum hydration levels:
Put a tube of O.R.S in your sports bag
Replenish salts, glucose and minerals
Restore electrolyte balance