sentences:  Being sensitive to adrenaline, apocrine sweat glands are involved in emotional sweating in humans (induced by anxiety, stress, fear, sexual stimulation, and pain).In a five-month-old human fetus, apocrine glands are distributed all over the body; after a few weeks, they exist in only restricted areas, including the armpits and external genitalia.They are inactive until stimulated by hormonal changes in puberty.