Ed Sheeran has given One Direction diet advice, telling them to “eat a burger.”

Ed was talking to Ryan Seacrest on the presenter’s US radio show when he was asked who he thought was the “buffest” member of One Direction.

“I don’t know, any of them,” he replied before asking: “Do they bench press?”

The Lego House crooner was then told Liam liked to exercise and subsisted for days on just “coffee and Kit Kats.”

[related]“See the way that I measure buffness for me, is I have a one pack, it’s actually very impressive,” Ed joked.

“I go through rolls on my stomach. I started out with three rolls, which is a good amount of beer and stuff like that but then, the more you drink and the more you eat, you get two rolls and then one roll and then it’s just one gut.”

“But you end up having a really tough gut,” Ed added. “So it’s like having a six pack but it’s a one pack.”

When Ryan joked not to reveal his fitness secret to the 1D boys, Ed replied: “I think they’d enjoy themselves more if they didn’t just eat Kit Kats and drink coffee.”

“Who wants to do that? Eat a burger now and then, man, c’mon!”

And of his own health regime, Ed explained: “I’m on my fried diet at the moment. If it’s fried I’ll eat it.”