There's no point at which you could be distracted. You write a test, you make it pass. You don't do anything until it passes. As soon as it passes, you write an

There's no point at which you could be distracted. You write a test, you make it pass. You don't do anything until it passes. As soon as it passes, you write another test. If I want to take a break, I make a test pass, then write the next one, and take the break. When I sit back down, I know exactly where I was: making the test pass.