Rollie & Hamish unload the invisible backpack and catch up on their new years resolutions.

Rollie talks to Professor Scott Wilkes, a practicing GP and Head of the University of Sunderland Medical School to ask questions about testosterone.

What is it?

Does it only exist to tell men to shag it or fight it?

Can testosterone replacement therapy be used as a workaround for doping in sport?

Professor Wilkes answers all these and more!