Stouts & Porters. Thereâs very little distinction between a Porter and a Stout, but they do have their differences. Porter is a dark, almost black, fruity-dry, top fermenting style. An ale, porter is brewed with a combination of roasted malt to impart flavour, colour and aroma. Stout is also a black, roast brew made by top fermentation.
Infections and illnesses are amongst the most common causes of temporary muscle fatigue. This is usually through muscle inflammation. Even though recovery is usual, if inflammation is severe (such as a bad bout of influenza), the weakness can last quite a while. This can sometimes trigger chronic fatigue syndrome (CFS).
Fatigue Cause No. 6: Hypothyroidism. The thyroid is a gland that regulates the metabolism, or how fast the body converts fuel into energy for your body's functions. An underactive thyroid (hypothyroidism) causes fatigue, depression, and weight gain.