"You go from everyone loving you and life is great, to no one caring," says McFly drummer Harry Judd.
He's not talking about his band, who have stayed together throughout their ten tumultuous years, but the pop sensations of the nineties and noughties that are now starring in ITV2's 'The Big Reunion'.
The 'Strictly Come Dancing' star reveals he's been watching the show with fascination and empathy with a lot of the groups.
"We experienced everything that they experienced but they're there reminiscing," he says.
"It's like wow, 95 percent of pop bands end up imploding after four or five years, and you can understand why, but thankfully it's different for us."
Quizing me, he asks: "Name a band it hasn't happened to? The only band that was remaining from our era was Girls Aloud but they kind of split up three years ago, they just came back recently for a reunion tour."
I ask Judd why he thinks McFly have stood the test of time, while boy bands like 5ive, 911 and Blue split after burn outs and fall outs?
"You need time at that age to reflect and just have time off from it all. Back then, record labels would just use you for all you were worth, until the band members were just hung out to dry.
"Thankfully, we've had really good managers who've made sure that hasn't happened to us. If we needed to we'd be given a day or a week off, and thankfully we all got on really well and have got through any other problems together."
McFly, who write their own songs and have creative control, have had their own share of drug and alcohol problems, Judd himself is now sober after his band mate and 'I'm A Celebrity' winner Dougie Poynter checked himself in to rehab in 2011.
But he explains: "None of us liked arguing or confrontation, we never made false friends, any drug problems that any of us have had have been behind closed doors...
"We're four good friends and the drive is the music... some of these other bands are not necessarily into their music, they're just given songs to sing on and dance to."
Talking about 'The Big Reunion' he adds: "I feel sorry for a lot of them, one of the bands had four number ones and then they didn't have a number one and they were dropped.
"You can understand why they get jaded with it they're just flown all over the place and there's no place to reflect... they're young, they're naive and then it's over."
I ask Judd what he thinks about Brian McFadden reportedly wanting a Westlife reunion, years after he quit the hugely successful Irish band: "Why would you leave Westlife? Why would you do that?" he laughs.
"I understand because he wasn't happy... but maybe you need to take time out before you make that decision, because most people regret it."
Not content with a new album on the way - McFly's sixth, for which Judd says they are "just trying to come to an agreement of the few songs that are leading the pack" - and a new tour Greatest Hits tour beginning in April, Judd has also signed up to run the London Marathon and the Tough Mudder endurance race in the same month.
Is he trying to punish himself? "It was my idea, it's a good way to raise money for charity and I kind of enjoy it... it's not like a fetish or anything."
He adds: "I'm trying to become more manly, but I'm actually terrified that I'm going to fail miserably and it will probably clarify the fact that I'm not manly at all... I just get so cold so easily."
Harry is running the London Marathon this year in aid of Teenage Cancer Trust and The Eyes Alight Appeal. To support him, visit his Virgin Money Giving page or text HARRY to 70300 to donate £3.