Sleep is way underrated. In fact, I often overhear people bragging about how they go to bed late, wake up early and run through their days. I'm not sure if I believe all of these stories but a lack of sleep is nothing to write home about. It's the fastest route to poor performance and mental fuzziness. And, you'll look tired!
Besides a lack of sleep, sometimes there's something else going on and you have to do a little detective work to figure out what's causing your daytime yawning and daydreams of getting some zzzz's. Check out this article on FitnessRx Magazine's website about the top causes of fatigue in women.
If any of these sound like you, it's time to talk to your physician. If not, it's still time to go to the doctor and find out what's going on. After all, walking around like a zombie is no way to live.