Hello. I was casually researching bad habits like knuckle cracking, nail biting, hair twirling and pencil chewing and I realized how many people do these things.

I do knuckle cracking and foot shaking. So I thought I would open discussion about this. Does anybody know a research site that discusses these topics well?

What other types of bad nervous habits do people find challenging? I also tend to eat more when I am stressed.

What other options might people resort to when they find themselves doing these things? One website advised squeezing a soft ball if the person begins to crack/pop their knuckles.

I am curious. Anybody wish to contribute?

Lori