If you practice chastity, it means you aren’t having sex of any kind, perhaps because you’re waiting until you get married, or maybe because you believe sex is evil.
Chastity comes from the Latin word castus, meaning “morally pure,” and preserving your chastity means you are keeping your body pure and free from sexual relations, at least for now. Some religious figures take a vow of chastity so they can focus their thoughts on their faith, while many young people save their chastity for when they fall in love. Heard of a chastity belt? It’s an uncomfortable garment that protects your chastity, whether you want it protected or not.