If and how often people masturbate depends on many things. One of the things it depends on is hormone levels. Hormones influence sexual arousal. Other things that the frequency of masturbation depend on are sexual habits. Sexual habits are sexual activities that people do because they are used to doing them. Other people of the same age or standing - called peers - can also influence this frequency. General health is another of the many factors. The general attitude towards masturbation is formed by culture. Medical causes have also been associated with masturbation.