The Grammy award winning and platinum-selling superstar R&B singer managed to flash photogs a quick smile before heading inside to sculpt some muscles.
Meanwhile, Robin says being a new father has given him the greatest joy and love he’s ever known – but also a bit of fear!
Robin, whose wife Paula Patton gave birth to their first child, a son, earlier this year, says parenthood can be scary because it fills you with doubt.
“(I think), what am I gonna do? Am I gonna be a good dad, am I going to be able to provide for him?” he says. “As a father you need to man up and try and get your life to together.”
The 33-year-old star adds that he plans to share his thoughts on raising kids with fans on his forthcoming untitled album.
He explains: “I have so much to talk about with the baby now and all these new challenges in life, so a lot of the themes that I’m writing about are a lot bigger.”