Violence
Rugby, soccer and basketball are typical examples. There is quite a lot of body contact there, which is by no means caress. We often see athletes getting wild and vicious on the field. They just can’t help attacking others. It feels so wonderful! Observing the rules, at this time, becomes so difficult. However, rules, in a sense, are just made to ensure that no one gets hurt too much or worse, killed, and thus make it possible to continue with the match. As for those sports like volleyball and tennis, which involve little body contact, the implication of violence still exists, in a much more disguised way.