A healthy human's (even one who smokes) risk of complications from covid is near zero. I don't run and lift weights to stay healthy. I do those activities because I enjoy them. I learned this from a young age. I'm not the skinniest person and I am fine with that. A benefit from running and lifting weights is a strong immune system and metabolism. When I was a kid, I wasn't sitting around all day playing video games and eating sugary and fatty snacks. When I was in elementary school, there were very few kids who were fat. If you were fat, you were being made fun of. The threat of being made fun of might have been beneficial in this regard. Regardless, when I look at today's youth, many are grossly overweight. More so the white males and female than other ethnicities. Before covid, the gym I go to regularly was packed at most times of the day. Now, it's empty. I am trying to understand why this happened. I never get a flu shot. I had covid twice and recovered as I would have with any other common cold. I am more worried about stomach viruses because I become extremely ill from them. I'll never received covid prophylaxis via an mRNA drug, and I never will. If you want to lose weight, don't be a fucking pussy who relies on weekly poisonous injections... The only way to successfully lose weight while increasing your metabolism and immune system are through habit modifications like diet and exercise. Who knows, by modifying your diet and exercise habits you might discover activities that bring you joy.