John Ternus is an American engineer and business executive who has served as the senior vice president of hardware engineering at Apple Inc. since 2021. He originally joined Apple in 2001.

Post-coital tristesse, also known as post-coital dysphoria (PCD), is the feeling of sadness, anxiety, agitation or aggression, after orgasm in sexual intercourse or masturbation. Its name comes from Neo-Latin postcoitalis and French tristesse, meaning "sadness". Many people with PCT may exhibit strong feelings of anxiety lasting from five minutes to two hours after coitus. Continue reading →