Drink your fluids

I am starting to get sick, which sucks. So, I slept-in this morning
and didn't hit the gym. Had my morning coffee, a huge mug of coffee at
work, bottle of water, green tea, then it was lunchtime. I didn't hit
the bathroom that much, so I am wondering where all this liquid was
going? I guess that's why they say to drink your fluids when you get
sick.