Questions & Answers about Я люблю футбол и болею за эту команду.
This is a very common point of confusion.
The verb болеть has a few related meanings:
- болеть = to be ill / sick
- болеть = to hurt / ache
- болеть за кого-что = to root for / support, especially in sports
So:
- Я болею. = I’m sick.
- У меня голова болит. = My head hurts.
- Я болею за эту команду. = I support this team.
The sports meaning comes from the idea of caring emotionally or worrying intensely about someone’s success.