WATCH: Chris Hemsworth's body double shares workout secretsChatting to Nova’s Fitzy & Wippa on Monday morning, Bobby shared just how tough it is to emulate the former Home and Away actor.“Dude, listen, everyone is like ‘wow look at the size of him’ and I’m like, yeah, that’s brilliant, I’m that guy's double so I text him I’m like, ‘thanks very much dude you’ve just made this even harder,’” he said.“I train with him a lot, we train all the time, we’re on the same diet regime and training.