When Jennifer Lopez posted this photo four days ago, people had more important things to focus on: triceps, biceps, abdominal muscles and so on. After spending a few days and seeing them well and happily, they noticed suspicious details in the background.

"Okay, but who's that man behind?" someone writes. "Who is behind you? Scary, ?reads another comment. "Who is that 'little boy' in the mask?" says a third.

Jennifer hasn't reacted - because she may be breaking the rules of quarantine - but it seems that the man with his hand in front of his mouth may be J.Lo's personal trainer, Davd Kirsch. The mystery was solved.