ABSTRACT
Sexual activity involves physical exercise, which in turn causes an alteration in cardiac function. There is a rise in pulse rate to around 120 beats/min and a modest rise in systolic blood pressure to around 160 mmHg. The changes are maximal at orgasm and the usual duration of sexual activity is between 5 and 20 minutes. The work that this involves for the man is around 3-5 MET (Metabolic Equivalent of the Task), and this compares with expenditure involved in playing golf (around 4-5 METs) and gardening (3-5 METs) (Table 18).
