What usually makes you lose the thread of your work?

I’m curious how this happens for other people.

For me, it’s usually some mix of Slack/messages, meetings, too many tabs, or jumping into a quick “small thing” that turns into a rabbit hole.

Then I come back later and the tab/file is still open… but I don’t fully remember what I was trying to finish.

What usually breaks your flow?

And when you come back, how do you normally figure out where to restart?