> On the contrary, you should go for regular checkups. Even late-stage capitalist health insurance covers these, because it help detect some problems early, before they become a bigger problem. Generally, this is once a year or so.

Nah. They're popular in America because of the corrupt healthcare-industrial complex, there's no health benefit on average.

(OTOH, if and when you notice something unusual, go to the doctor post-haste, don't wait around hoping it'll clear up or put off mentioning it until your scheduled annual medical).