Have more sex, play better cricket: Kirsten Headlines Today New Delhi, September 23, 2009 Indian cricket coach Gary Kirsten has spelt out his mantra for making the team more aggressive, and therefore more successful, on the field. Have more sex, he says. Kirsten wants the team to be more sexually active. According to him, if the players don't have a partner, they should simply imagine. In a four-page document, Kirsten says having more sex will increase testosterone levels, which in turn will increase the players' strength, aggression and competitiveness. Not having sex for a few months can cause a significant drop in aggression levels. The document put together by Kirsten and mental conditioning expert Paddy Upton has been shared with each Indian player. The document goes beyond the use of passion to increase performance. It asks the players to develop "social, emotional and spiritual intelligence".