Heat exposure raises your core body temperature and can mobilize toxins while activating your immune system to attack dormant viruses and bacteria you carry. This combination causes dehydration, electrolyte imbalances, and flu-like symptoms that feel like sickness.
When you go outside, whether you take a walk, or you're working outside in the yard, or you're just heating your body up, it's very similar to going in a sauna, okay? Because your body temperature increases, and you have the added effect of the muscles moving and working. You're going to start to do a number of things like moving toxins around. While you can, simply from the heat elevation, feel sick from dehydration and changes in your Heat shock proteins and other heat-related chemistry. But another reason can be the movement of toxins in the body that get stirred up, or you actually can activate your immune system due to the heat. Okay, medical hyperthermia—we actually try to do this. But what happens when you activate your immune system due to the heat rising in your body? It turns on your immune activity against resident viruses, bacteria, etc. That we all have in our body. Some people carry a higher load. Load of these sort of chronic viruses, bacteria, and stuff, and so when we activate the immune system through heat, we feel flu-like because we're actually trying to fight with something that's there that we didn't know was there. So it could be toxicity-oriented, it could be heat chemistry-oriented, it can be dehydration electrolytes, and it actually can be your immune system actually gets stirred up.
