[memefrog]

I think the number one topic should be actually doing it at all. Too many people just talk about getting exercise, or endlessly watch videos about it, or endlessly read blogs and articles and guides, but never actually do it, or do very little.

[ImPostingOnHN]

I think it should be injuries, because of the reasons mentioned above.

It's better to not work out and not be injured than it is to work out and be injured, so the focus should first be on avoiding injury and second on actually going out and doing stuff. Same reason we watch safety videos before we do the thing they concern.