And a healthy diet ,Pure speculation.
Curious to know what people's experience within their group as to people that were infected? I'd estimate that within my personal community 80-90% were infected at some point (I suspect that other's experience is different). The vast majority of which were never reported and mostly Omicron. No one passed, the few I'm aware of were at least 4 degrees of separation. That is in part why I'm skeptical of 1 mm more deaths. Maybe, but I just don't see any compelling evidence to support that number.
With the exception of full quarantine with no human contact, its clear that virus didn't give a shit about what you did (in terms of infection). Luck played a large role in whether you were infected though. It's clear to me that the vaccine and prior infection was helpful in preventing severe symptoms.