Staying in a fasted state for a long time has also been linked with some side effects. If you stay fasted for a long time or too often your may:
Feel tired: In the absence of enough fuel in the body, you might feel fatigued, dizzy, and weak.
Persistent hunger: Avoiding both food and water can make you feel even hungrier and you may end up eating more than normal.
Irritability. During the fasted state you may feel cranky and have drastic mood swings. Moreover, your concentration level will decrease.
Headaches. Restricting nutrients, especially carbohydrates, can also lead to headaches.
In extreme cases and due to prolonged fasting one may also suffer from seizure, brain swelling, heat injury and kidney failure.
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