I'm facing detox symptoms only in the morning. What could be the reason?

Yes, it is perfectly normal to experience detox symptoms in the morning while fasting. During the night when we give a longer break to our digestive system, our praanshakti becomes more fully engaged in our detox and healing process. 

It uses this opportunity to push out the toxins from the body’s 4 channels of elimination – sweat, urine, stool, breath. This is why you may experience detox symptoms more often in the morning than the rest of the day. It is a sign of detoxification.