I’m aware of long covid risks. My belief to which you are replying is that exposure to viruses is important to continue making antibodies. The study indicates a 25% risk of cognitive impacts from mild COVID cases. I’m not alarmed by that number, and I’m not seeing how it should change my belief about immune system health.
By the year 2100, ambient CO2 will reach 1000 ppm (1 ppt), which is associated with a 10-15% decline in cognition. In many indoor spaces, CO2 levels are much higher than this. I actually got CO2 up to 1800 ppm just driving my car with the air turned off. Anybody who works indoors in a building is at risk of impaired cognition.
Me too, but for me it depends on my weight. My current and long term normal weight is 178 lbs. Any lighter and I get shakey and light headed when I’ve gone without eating for 3 hours and go on a walk. Above this weight, no problems.
When I hiked the PCT, I dropped to about 160 lbs, and I had to eat with urgency every 2 hours. Newborn babies also eat on this schedule. It makes me believe humans can only really process and store food for 2 hours and beyond that you start pulling reserves. This was also how I felt training for a marathon. I don’t care how fast you can run but it’s not healthy to do it for more than 2 hours. For me this was a half marathon.