Why is it good to run is sweats?

I am on the wrestling team and we run and workout in sweats for 2-3 hours in sweats usually with the room at about 75-85 degrees. Yet when I go out on the track team if we are running some milage and I wear a hoodie they think its bad for me. I stay hydrated most of the time and I some evidence to prove them that running in sweats will not make you pass out, it will if you arnt hydrated though.





Any thoughts?
Why is it good to run is sweats?
When you're with the wrestling team, one of your goals is to lose weight so that you can compete at a lower weight class. By exercising in sweats, which make you, well, sweat, you are losing water and electrolytes.





Your track team is correct when they say that it is unsafe to sweat out weight (though not to run in a hoodie if it is chilly). It's also unsafe to run in a hoodie if outside temperatures are otherwise warm.





The reason for that is that thirst is something that comes after your body already has a deficit. You are already dehydrated when you become thirsty, so replenishing is harder than maintaining a constant state of hydration.
Why is it good to run is sweats?
The fabric is more of an issue. You want a fabric that wicks sweat away so that you can cool down. So, the issue isn't hydration as it is increasing body temperature. If your hoodie is made of cotton, it's a non-problem, but even the new fabrics with the wonderful wick-away features don't compare with traditional sweats.
Reply:Hydration is very important, but the reason some people run in sweats is so they'll burn more calories/lose more weight. It gets rid of more of your body's water. But you need some of that water, and you don't need to sweat too much. It's not true that the more you sweat the better. You'll just need to replace that water again anyhow.