What it is: Not having sex
How to use it: Abstain from sexual activity
How it works:
Abstinence means different things to everyone - make sure to talk with your partner about what it means to them. Typically, it means not to have vaginal, oral or anal sex.
Side effects:
None!
Pros
It's 100% effective
It's always available
Everyone can use it
Protects from STIs
Cons
Takes willpower and dedication