Merrick Watts made his name in comedy and radio, one half of the very successful duo Merrick & Rosso.

More recently he was the winner of the gruelling TV program SAS Australia. 

But what a lot of people don't know is that he's a very astute entrepreneur. 

Merrick joined Sean Aylmer in the studio for a very frank - and funny - conversation about his journey into business, as the co-founder of sports hydration drink company Posca Hydrate.