Why are we paying so much for something that’s free?

According to a recent report, the global sleep aid industry is set to tip $76 billion this year. It’s essentially free to lie down and close your eyes so how has a billion dollar industry evolved and why are we spending so much on it? This morning we spoke with Australian sleep research specialist Dr Carmel Harrington, who is also the Managing Director of Sleep For Health, to help us understand the power of sleep and the burgeoning industry.