Is it normal to laugh out loud by yourself?
Yep.Totally normal
Yes—laughing out loud when you’re by yourself is totally normal. You might be reacting to a funny thought, memory, video, or something you imagined.
Your brain doesn’t need an audience to find something funny. People laugh alone at jokes they remember, amusing thoughts, videos, or just the absurdity of a moment—and sometimes the laugh comes before you’ve even figured out what amused you.
If it feels natural and isn’t bothering you, there’s nothing strange about it. If you’re laughing in a way that feels uncontrollable, upsetting, or disconnected from what you’re feeling, that would be a different thing to pay attention to.