Newby here - are subheadings allowed in articles?

[RockpoolWriting]

Hi all,

I'm brand new to the site and working on my first article now. I was just wondering if subheadings were allowed through the body of the article? I often format my blog posts with 2 to 3 subheadings per article, but I'm not sure whether that is OK for constant content?

If they are OK, could anyone advise me on the appropriate way to format this please?

Many thanks,

Kim