It’s usually warm-crazyhot where I am.
You typically have to drink a lot, and especially when you eat.
You also eat less, if you drink while eating. Although you may feel hungry earlier after such a meal, you need the water.
There will be three months or so, when walking from your vehicle to your front door, will give you a whole body sweat.
When I was a LEO, I wore all black, and with body armor, and all the other crap, that cane with it.
I worked nights, but it was still dangerously hot and humid.
Although I was supposed to keep a neat appearance, I frequently poured cold water over my head, and soaked my whole torso, throughout the night.
I was soaking wet, most of the time. But. I would have passed out. I definitely vomited just from being SO hot, most nights for several summers.
I wasn’t a police officer, so I didn’t usually have a personal vehicle, and therefore no A/C. I spent hours each night doing observation, and taking notes in various places outside.
When I bounced, wearing all my gear was optional, so I didn’t wear a vest, or utility belt.
The places I bounced at, were often full of drunk people, and most venues used fans, and left windows open.
I worked a lot of festivals too, where I was outside in the Sun, from 6AM-12AM.
Drinking, whilst eating, isn’t always a luxury. It is a necessity.
Many animals, especially when younger, get their water from what they eat. Baby birds, for instance, are not brought water. They eat juicy worms, insects, and soft tissues. That’s enough, until they get old enough to find, and drink water.