How to combat fatigue

First make sure you are sleeping enough.
Is your nutrition sufficient? In general women need at least 1200
calories per day and men 1500.
Avoid monotony: a varied diet will be more likely to provide the
nutritive elements you need to conserve your energy.
The sensation of fatigue may be stress-related, especially when
you experience emotional stress. Do you feel tense at work or at
home?
Lastly, don’t neglect physical exercise. Tired or not, get out in the
fresh air every day. Walking is the minimum effort necessary for
staying in shape.