Leila looks at the healing powers of metal to find out if they can cure our ills. Meanwhile, it’s been discovered that Australians are the second hardest workers in the world but are we ruining our health in search for success? The What’s Good For You team brings you the results. Brooke enters the hot debate whether vaccination is bad for your kids and Slats enlists the help of some rugby players to find out if muscle can turn to fat. And genetically modified food- frankenscience or the answer to world starvation? Dr Rochford reports.