Ever felt like your whole morning slipped by before you got any real work done? Have you woken up grouchy, then felt grumpy all day? Unproductive days often have a sneaky culprit: a bad morning routine. With this in mind, we set out to find a few simple morning habits with proven track records-routines backed by studies, endorsed by experts, or practiced by successful entrepreneurs. Here are six ways you can start your morning to make for a more productive day.