Today's guest is Justin Wright. He's one of the world's top CrossFit trainers, based in Boston, USA. He's the founder of the Wright Performance method of training, and this chat throws up some fascinating subjects. When you listen you'll hear:

How meditation and visualisation can help your energy levels
Changing negative thoughts to positive energy
How taking a scientific approach to your fitness and your life can make a massive difference
Easy ways to collect data on your peformance and your life, and your sleep
How using the Jawbone wristband can improve your energy during the day
How to make positive nutrition choices that are practical for your everyday routine
The new technology that can measure heart rate and blood pressure
The importance of not over-obsessing and how to maintain perspective
How changing your night-time habits can improve your motivation and energy levels during the day