Many women complain from constant fatigue and a slow pace of life. "I'm less active than my peers," "I struggle to drag myself out of bed," "I'm sad and find no rest in sleep or wakefulness," "I'm tired," and many similar phrases they've grown accustomed to saying and repeating. Persistent fatigue has numerous causes. I certainly won't list them all here, but I will try to shed light on the most common one: fibromyalgia (or muscular rheumatism), explaining the alleged causal relationship between chronic fatigue and fungi in the digestive tract.