What happens when you are dehydrated?

could very well be dehydration...could be low blood sugar...did you eat before you ran and have some "food" substance to replenish afterward? Just some thoughts because it has happened to me

Yes you were dehydrated I was at school once and when I got up from my desk I would feel light headed and dizzy and my vision would kinda turn white then it would go back to normal

yes,

my teacher once fainted because dehydration,and it's really hot (summer is usually 40 degree C here.normal days range 30-35)

drink a lot of water before running.

my mother had the experienced it. She can't move and speak correctly. i thought she was fainted but not. her view is blur and she dizzy....U need to drink alot. Drhydration is dangerous can coz death.And ur body show some symptom coz ur body lacking of water so that they cannot functioning well.Drink a lot of water and may be u can try other kind of exercise like swimming....This is recommende by dr.. swimmng can burn fat n cholesterol much faster compared to running

yea this happens to me a lot i just make sure after i run to drink water while im in the shower or else i forget but yes you were dehydrated

you get really really sick.

some symptoms are:

extreme dizziness.

throwing up.

extremly high fever..

Almost deadly high white blood count.

if your dehydrated i strongly suggest you go to a doctor.

when i was dehydrated, the doctor was shocked i didn't pass out from the high white blood cell count.

when you are "thirsty" it's your body's natual sign of telling you that you are becoming dehydrated..

thats why when you play any sports the coach always tell you to drink until you arent thirsty anymore.

it was both. those are all the symptoms. you need to keep hydrated bc it could cause you to have a concusstion and pass out

Im not sure but you can always tell in your pee, if its really dark then you gotta drink!

you cramp up