The wonders of alcohol.
The achilles heel for many people. The 'norm' for some others. And poison if you have CFS/PVFS/M. E. .. .
Chronic Fatigue Syndrome /Fibromyalgia makes you extremely tired, exhausted and weak. It means you only have a fraction of the waking hours that most people enjoy - and even those waking hours are often spent feeling exhausted and with brain fog.