Often encountered people who feel tired after working all day. The amount of sleep is lacking, however, in addition to the problems experienced day-to-day, there are a number of other factors causing fatigue that is not endless.
The reason most encountered when feeling tired is because the daily habits. Ranging from food consumed daily, lack of sleep, until rarely exercise.
Number of unmet sleep should not be disturbed by the consumption of caffeine and alcohol before bedtime. And when the sports schedule you messed up, it's time to go back exercise routine.
Indeed, it is not always easy to define the problem of fatigue or body that feels a lack of energy.