Declining skill or fitness level from taking a break from exercise is formally referred to as

Reversiblility, i think is the word youre looking for.

Hiv can be transmitted through oral sex. you can get hiv through vaginal fluid and semen. if you have an open sore or cut in or near your mouth and an you get the semen or vaginal fluid of an infected person in those cuts or sores, you can get hiv