The 7/24 Challenge is a physical and sexual challenge open to men and women of all nationalities, devised by a number of male and female American athletes when preparing for the 2008 Beijing Olympics, who were getting frustrated by undertaking conventional training methods for prolonged periods.

Participants must, in the space of 23 hours and 59 minutes undertake the following 7 feats, in the following order:-

(1) Have sexual intercourse with their heterosexual partner (to include ejaculation);

(2) Swim 250 metres in open water or 500 metres in a swimming pool;

(3) Cycle 10 kilometres;

(4) Play a set of tennis or 9 holes of golf,

(5) Run 10 kilometres;

(6) Play one 20 minute period in an ice hockey game or two 12 minute quarters in a basketball game; and

(7) Complete a second round of sexual intercourse with the same partner (to include ejaculation).