Do you feel tired frequently? Actualy this is a regular problem nowadays, and it may be caused by a lack of sleep, a bad diet, psycological issues, or even from a health condition. The more you postpone to solve that condition, more your productivy will decrease and more you will suffer from all the consequences from that.
If you want to know more about this issues, we recomend the reading of an arcticle from lifehacker.com. It is a nice way to understand the four major reasons of exaustion, and how to avoid them. Click here to read it.