I would guess that boxing is dangerous no matter what your experience or why you're doing it. You don't have to have experience or necessarily to be serious to hit the other person hard, or relatively hard (as you may not have the muscles), in the head. In fact, without the one being hit having experience, the hit is that much more likely to land.
Retrospring uses Markdown for formatting
*italic text*
for italic text
**bold text**
for bold text
[link](https://example.com)
for link