I used this technique for a while in the early days but then fell out of the habit. Then I rediscovered it again thanks to one of the threads on here the other day, and have now discovered that it's ideal for keeping me focused when I work from home where I tend to struggle to keep on task much more so than in the office (oh, the welcome distractions of washing dishes, feeding pets, etc!).

I do find that I don't always keep to time with it, eg I will carry on beyond the 25mins when I'm in the middle of something and it's going well, and will take longer breaks on occasion (don't 5 mins just go sooo quickly!), so my number of tomatoes/day fluctuates quite a bit and doesn't lend itself so well to comparisons.

Liking the idea of tomato accountability though - would be great to name a target number each morning and see how I get on... right, I will aim for 6 tomatoes before lunch today! (turkey)