“…Specific biological feature of type "A" people is the high sympathetic system activity caused, in part, by the elevated sensitivity of β-adrenoreceptors (Catipovič-Veselica et al, 1997;Le Melledo et al, 2001) and increased blood catecholamine levels (Friedman et al, 1975). High urine testosterone is also typical for type "A" people (Zumoff et al, 1984).…”