Matt Willis revealed he became 'addicted' to working out as a result of his previous drug and alcohol struggles.
The star, 39, rose to fame when he joined Busted as a bassist. The band was widely popular before it disbanded in 2005.
During the same year, Matt went to London's Priory Hospital to treat his addiction to alcohol. A year later, when he was only 23, he checked in again for drug abuse.
