I don’t think “normal” is a helpful frame of mind here. Maybe “healthy” is a better way to see it : does it make you feel good ? Does it feel like a healthy part of your life ? I don’t want to decide for you, but from your other comments it seems like it probably is.

I would call it a problem if it becomes an obsession, if it takes time away from other things you want to do, if you do it so much you hurt yourself… Etc.