I get physically exhausted quite a bit. However, tonight, I'm emotionally exhausted. Sorting out the card-payment details, while having to deal with websites that updated since I last checked them, has me in a tizzy.
I even looked up the effect of a 5 GHz frequency, my WiFi frequency, on the human anatomy. However, others are exposed to much higher frequencies. So, it's clear as mud.
As Daniel Johnston sang, "I have lost my mind!"