The 39-year-old singer, who joined his band Take That when he was just 15, said years of performing have taken its toll on his body and he has been advised to slow down, reported Contactmusic.
"I'm like, 'That's pretty harsh, being told that'. So bits and bobs on my body are closing down and worn away from abuse," Williams said.
However, the 'Candy' hitmaker, who has fought with addictions to drugs and alcohol in the past, has no regrets about the way he has 'worn'.
"I've used my body well. I actually want to go to the grave skidding. I will skid into the grave," he added.