How do you prevent cybersex?

Cybersex is simply having sex with someone online. You type out what you would do to them.

Dancers leaping across a floor can land with the force of up to eight times their body weight, so it is important to dance on a sprung dance floor. Injuries can include plantar facia, shin splints,...

Yes. Emotional adultery precedes physical sex.

you cant it is hereditory and occurs in children pre-puberty you cant it is hereditory and occurs in children pre-puberty

The key isn't to prevent the craving (it's just a biological part of being human), but to satisfy it without piling on the calories. Try eating a small portion of a sweet cereal, or something else...