intermittent retention
Intermittent retention refers to the act of retaining one's semen or not ejaculating within a selected window of time, similar to how one would refrain from eating while doing intermittent fasting. There are many purported benefits of intermittent retention. This term is first coined by the app makers of Epic, which is a semen retention tracker.
He has an active sex life but he is doing intermittent retention to preserve his lifeforce.