Nick Jonas shared a shirtless picture of himself on Instagram that reveals the youngest Jonas brother’s chiseled abs.

Jonas, who’s posing with one arm bent behind his head and wearing Nike athletic shorts, captioned the photo: “I never do this but… Healthy living and fitness update. Post workout picture. #diabeticinshape #2.0.” From his abs, to his bulging biceps and buff pecs, Jonas, 20, is certainly in top shape.

The Jonas Brothers are currently on tour in North Carolina. “Back in NC very nostalgic. @CWYWF wrapped two months ago already! Who’s ready for the show tonight?!,” Jonas tweeted earlier this week. After performing in Charlotte on Tuesday, Nick, Joe and Kevin Jonas will be heading to Raleigh's Red Hat Amphitheater for their Wednesday night show.

Jonas, who was diagnosed with Type 1 diabetes at 13, has been making an effort to lead a healthy life. Since the spring, he’s been taking to Twitter to talk about his workouts – though this is the first time a fitness update has come with a photo. In addition to working out, the singer and musician also practices a healthy diet. “I love dried kale with seasoning on it, he told Us Weekly earlier in the month.

It may come as a surprise, but Jonas is single – and has been since February 2012. He was last linked to Australian pop star Delta Goodrem, and once briefly dated Miley Cyrus.

Chelsea Regan

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