Sometimes, it is absolutely necessary to take a break. It is just as important to not lose track of the time during that break. A break that lasts a half an hour to an hour is a good break, but if you lose track of the time, hours could go by. Then you will be scrambling to get all of your work done before the next day. I do take multiple breaks each day, but I don’t end my day without having all of my work for the next day done.