Nick Jonas explains the greatest Instagram selfie ever taken

Nick Jonas on Shirtless Photo: ‘It’s Been a Pretty Hilarious Reaction’

We’re all still reeling from that incredibly ab-tastic shirtless photo Nick Jonas posted on Instagram on Tuesday.

In case you’ve been living under a rock, here it is again:

We were lucky enough to chat with the 20-year-old about the infamous pic, how he got that body, and maybe most importantly … who took the photo?!

Nick tells us he went back and forth about posting the shirtless pic and is honestly shocked by the attention it ended up getting. “There’s a lot of people running around without their shirts on these days, so I just didn’t want to add to the noise, but I felt like as a diabetic … it’s twice as hard for us diabetics to stay in shape. I’ve met a lot of diabetics recently who have come to me and said, ‘Thank you for being so vocal about fitness and health’ because it’s helping them. I just wanted to give some inspiration to those people … It’s been a pretty hilarious reaction.”

But it wasn’t just health that inspired Nick. He also has a few love scenes with actress Isabel Lucas in the upcoming film, Careful What You Wish For, and “I wanted to look ok.”

Of all the crazy reactions and questions he’s received about the photo, Nick says the most-asked is: Who took it? ”That was the funniest part of the reaction … people trying to figure out who took it. There’s a self-timer setting on the camera.”

And not only is Nick’s body perfect, but so are his photo-taking abilities … he says he only snapped one pic before getting it just right. ”I’m not lying here … it was one picture … I debated [posting] it with my brothers and people in our band. I was like, ‘Should I do this?’ and they were like, ‘You have to!’ So I did it.”

But don’t get your hopes up for more, unfortunately. ”I don’t know if it’s something I’d do again,” he admits. “People will just have to go see the movie for more of that.”

Until then, fans can see Nick in the flesh and catch the Jonas Brothers as they tour America (find all the dates, venues, and ticket info HERE). Two upcoming shows are especially important — August 14 at Viejas Arena in San Diego and August 16 in Los Angeles at the Gibson Amphitheatre at Universal CityWalk — because they sandwich Joe‘s 24th birthday on August 15.

So far, Nick says, being on the road has been an incredible experience. “After three-and-a-half years away from touring, to have fans coming out like they are and supporting us feels amazing.”

For more from Nick’s fitness, his feelings on becoming an uncle soon, and a very special offer he received from the Calvin Klein brand, listen to his entire interview: