The Stooges frontman explained why he’s always shirtless<br />
Iggy posed naked for artist Jeremy Deller's life drawing class in February
'Iggy Pop Life Class' will go on display from November to March 2017
The documentary premiered earlier this year<br />
Pop's radio show included some classic cuts from Bowie's back catalogue
"There's a lot of things I can't do now that I could do when I was 25"
Punk icon recently scored the highest-charting album of his career in the US
Taken from his latest LP 'Post Pop Depression'