I find using a chess timer in conjunction with Pomodoros helpful in restricting break time overflow. Tracking work vs break time via the chess timer motivates me to keep the ratio in check. It is also satisfying to get your "score" up; a high work to break ratio at the end of a session feels good.
Previous Open Thread
You know the drill - If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one.
3. Open Threads should start on Monday, and end on Sunday.
4. Open Threads should be posted in Discussion, and not Main.