But what do you do if a build takes about five minutes? Starting another task (like programming) is hardly possible, because you don't get anything meaningful done in five minutes. Checking emails, chat messages, or the the phone either doesn't fill up the time (no new messages) or just sidetracks you (starting another task that takes longer than five minutes).
Checking some random websites or social media is also a bad idea, especially if you have a lot of those five minute builds during the day, because then it creates a habit of distraction.
How do you spend that time?