Is day trading a thing in bitcoin?
Yes.
Does anyone practice it?
The subboard "speculation"[1] is mostly dedicated to that topic.
Also, how big is the benefit someone could make of it? Is it substantial or just some minor benefit?
Also hello everyone I'm a newcomer around the bitcoin community. I'm sorry if the topic has been covered somewhere else but I searched around the forum and I anyway felt like a wanted to ask in a new topic.
Welcome.
[1]
https://bitcointalk.org/index.php?board=57.0