On a Gatorade commerical it says that racers lose up to 10lbs in one race?

Question

It says that racers can lose up to 10lbs in one race.
Is this true? & if so, how does this work? Isn't this unhealthy?

Answer 1

That is water weight. Race car drivers work in a very hot
environment, a race care that makes tremendous power and
gives off heat. Added to that is fire proof underwear, driving suit,
gloves and helmet. Then they wheel around a race car
at high speed, fighting centrifugal force as well as g-force
All that equals a massive loss of water in their bodies.

Answer 2

It would depend on the race, but if you are in a four hour NASCAR race in southern summer heat, you could quite possibly sweat off that much. The cars aren't air conditioned, and the radiators dump a lot of heat onto the track that doesn't escape.

It's not the healthiest thing for the drivers. They compensate by drinking a lot of water and staying in shape. In some races, drivers wear special vests that circulate cold water into their suits and drink water during pit stops. For things like 24 hour endurance races, each car will have two or more drivers who take turns.

Answer 3

it may be true in a INDY 500 race takes a long time to go that far.

Answer 4

for people who run...depending on how far they run, they may loose up to 10 lbs of sweat because they are out in the sun perspiring so much