There are no recommendation algorithms for content, you are one! Search for communities based on your interests and subscribe to them. The Communities view of your home instance and Lemmy Explorer are good for that. Because Lemmy is decentralized, all discussion isn’t centered around one site like on Reddit, which may at first give an impression of emptiness.

I also wrote an extensive guide about Lemmy few weeks ago.

Welcome!

Thanks for showing me that, fixed!

What might be the repercussions of doing this?

Oooh, absolutely nothing! No side effects whatsoever, it really improves your quality of life!

Yes.

Another variation of that is claiming how getting sick repeatedly is somehow beneficial for getting a strong immune system. That ignores research, as children who have a lot of common infections early in life have higher risk of moderate to severe infections and antibiotic use throughout childhood. That also ignores viruses for which a durable immunity isn’t currently possible, such as COVID.

EDIT: Basically the immunity system doesn’t work like a muscle.

This could be out of Street Fighter.