The genealogy of lifting can be traced back to the beginning of recorded history where humanity's fascination with physical abilities can be found among numerous ancient writings. Progressive resistance training dates back at least to Ancient Greece, when legend has it that wrestler Milo of Croton trained by carrying a newborn calf on his back every day until it was fully grown. Another Greek, the physician Galen, described strength training exercises using the halteres (an early form of dumbbell) in the 2nd century.