I'm not sure i can agrea.
If lost in the desert, the mashed pulp of many cacti will provide life sustaining fluid. Fact: Cacti contain a highly acidic solution that will induce vomiting if drunk.
It depends on the cactus, some can provide a drink. You just have to find the right one (that is, if they grow there..).
Drinking hot tea or coffee will keep you warmer than drinking cold soda or juice. Fact: It's the calorie content, not the heat of the beverage that produces body heat.
Well i'm not sure i agrea. I don't have scientific numbers. but isn't it obvious that pouring warm stuff inside (warmer than you body temperature, but not to much to burn you), will raise the core temperature?
"If your feet are cold, put on a hat." Fact: We do not lose more heat from our heads than from any other portion of the body with the same surface area.
The bloodvessels will narrow on you limbs, when your cold. They DON'T norrow down, on you neck and head (brain don't work well if they did)
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