'The Guide to Metabolism' page has some small issues related to SEO (Search Engine Optimization)

[hanawa]

The page The Guide to Metabolism has a small issue that may affect SEO, the page contains two h1 HTML tags, normally pages should have only one. If needed I can provide more information/help with the SEO aspects of the site.

[Andi64]

Does not really matter, according to John Mueller (surprised me too hanawa)

You can use H1 tags as often as you want on a page. There’s no limit, neither upper or lower bound.

Your site is going to rank perfectly fine with no H1 tags or with five H1 tags.

https://www.youtube.com/watch?v=rwpwq8Ynf7s&t=1427s