text: On May 15, he began to show symptoms of lethargy, fatigue, sore throat (not coughing), loss of taste and went to get samples for testing, the result was negative?
classes:  No, stress has a huge effect on the human brain.  Besides, stress has a huge effect on the human brain.  Yes, stress has a huge effect on the human brain.  Meanwhile, stress has a huge effect on the human brain.