If you want better focus, there is a low-tech move that outperforms most productivity hacks: put your phone in another room and run a 90-minute deep-work timer.

Not face down. Not on silent. Not "just for emergencies." In another room.

Why this works

Most attention loss is not caused by full interruptions. It is caused by micro-fractures: checking, anticipating checks, and keeping a part of your brain ready for notification context. Even when the phone is untouched, just having it nearby creates cognitive drag.

Removing it from reach changes the default from reactive to deliberate. A 90-minute timer adds a clear finish line and reduces decision fatigue about when to stop.

The practical protocol

1. Choose one high-value task before starting.
2. Put phone in another room.
3. Start a 90-minute timer.
4. Single-task until timer ends.
5. Take a short reset break, then decide whether to run another block.

Expected outcome

For most people, this setup delivers noticeably better quality of thinking and materially more output than fragmented work windows. The gain is usually not 10%. It often feels closer to doubling effective focus.

How to test it honestly

Run a 3-day comparison:

• Normal days: work as usual.
• Deep-work days: phone in another room + one 90-minute block minimum.

Track only three things:

• Meaningful tasks completed
• Number of distractions
• Focus score (1-10)

If deep-work days are clearly better, you do not need more theory. You need a repeatable ritual.

The point is not becoming a monk. The point is creating predictable windows where hard thinking can actually happen.