Ed Sheeran's friends and family are convinced he has attention deficit hyperactivity disorder (ADHD).
Ed Sheeran
The chart-topping star has never been diagnosed with the brain disorder, which is marked by an inability to pay attention for concerted periods of time and hyperactivity - but has revealed it was repeatedly suggested to him throughout his childhood.
Ed, who admits to being a "weird" child, shared: "I was never diagnosed but everyone is convinced I have ADHD."
The 'Castle on the Hill' hitmaker also claimed he hasn't really taken a day off from working on his music since he was 16.
Ed explained that his admirable work ethic is something that stems from his dad John.
He told GQ magazine: "It comes from my dad thinking I was lazy and wanting to prove a point."
Meanwhile, Ed recently said that he and Taylor Swift have become two of the most popular artists in the world because they both have the mentality of an underdog.
He said: "There's an underdog element to it. Taylor was never the popular kid in school. I was never the popular kid in school.
"Then you get to the point when you become the most popular kid in school - and we both take it a bit too far.
"She wants to be the biggest female artist in the world and I want to be the biggest male artist in the world. It also comes from always being told that you can't do something and being like, 'F you. I can.'"
In fact, Ed revealed that his long-term ambition is to outsell Adele and become the most popular artist in the world.
He reflected: "Adele is the one person who's sold more records than me in the past ten years. She's the only person I need to sell more records than. That's a big f***ing feat because her last album sold 20 million. But if I don't set her as the benchmark then I'm selling myself short.
"I'm not in competition [creatively] because we all sit in our own lanes, but once the creative product is out there is a race to the finish line."
Tagged in Adele Taylor Swift Ed Sheeran