A conditioning process for the enhanced production of human growth hormone in a human has a first step of application of pressurized cooling to the limbs of a subject, who experiences a ramp-up exertion followed by a series of conditioning cycles, followed by a ramp-down cycle. The condition cycles include an interval of intense exertion followed by an interval of reduced exertion, and during ramp-up cycle, conditioning cycle, and ramp-down cycle, the pressure cooling to the limbs is set as a fraction of systolic blood pressure, with the fraction in the range 33% to 220%.La presente invención se relaciona con un método de acondicionamiento físico para usarse con un aparato de ejercicio. En particular, la presente invención se relaciona con un método de acondicionamiento para aumentar la hormona del crecimiento humano (HGH).