MotivAider "to do" reminder

Is there something you need to be reminded of every so many minutes or hours? Teachers need to stop and change to the next activity. You may need to leave your desk for 5 minutes and take a walk, stretch, or deep breathe. The MotivAider is worn on one's belt, waistband or purse, and sends off a vibrating signal at whatever time interval you set. Mine helps me remember to take the dog out on time. What will yours remind you to do? This is a very basic product with no bells or whistles, but it does the job surprisingly well. 4 stars.