Why do you feel so tired after diarrhea?

Feeling tired after diarrhea is often due to a combination of factors. Diarrhea can lead to dehydration and the loss of electrolytes, both of which can sap your energy levels. Additionally, the body expends energy to fight off the underlying cause of the diarrhea, such as an infection, which can contribute to fatigue. Lastly, the stress on the digestive system can also leave you feeling drained.