You already know how it feels. It is also well documented.
A distraction of under three seconds, about the time it takes to glance at a notification, was enough to double the rate of errors people made picking up where they left off. That was a three hundred person experiment, and the interruptions were shorter than the ones you get all day.
Reading on a screen before bed cut evening melatonin by fifty five percent in a Harvard affiliated sleep lab, pushed sleep later, and left people less alert the next morning. Sleep lost that way measurably degrades executive function and sustained attention, which is most of what you are actually paid for.
The fix here is distance. Enough time away that the pull loses its grip on its own. In a randomised trial published last year, adults who blocked the mobile internet on their phones for two weeks improved their sustained attention by an amount the researchers compared to reversing ten years of age related decline.
Two weeks is more than anyone will give you. The change starts far sooner than that. When researchers at Heidelberg University had adults set their phones aside for seventy two hours, brain scans showed the reward and craving circuits, the parts a phone keeps lit, measurably settling down, with matching shifts in dopamine and serotonin signalling.
Three days, without the thing in your pocket and somewhere built for it, is where this starts.
