ELI5 why do some disease symptoms stay long after you've healed?

For example, alot of people who had covid, remain extra tired for months after they're healed. Why is this? Why does the body take so long to recover?

reddit.com
u/Local-Daikon5044 — 2 months ago

In sports, is it best to be a jack of all trades or master of 1?

Goal: Aesthetics (lean, defined, not huge) and long-term health.

​Currently running a hybrid schedule: 2x gym, 1x rock climbing, 2x running/swimming. I love the variety, but I know I'm trading off peak performance in any single discipline.

​From a purely aesthetic and health standpoint, is this all-rounder approach better than focusing 100% on just one sport?

reddit.com
u/Local-Daikon5044 — 2 months ago