Caffeine and Endurance Performance

If you're an endurance athlete, you probably experience the wall - that moment in the race when you're pushing yourself really hard and your body just tells you, "Enough. You can't go on." The same can be said for strength trainers too - you're lifting a weight that's been easy before, but now feels too heavy to complete. So you wonder if it's maybe your body telling you you've had enough, and it's time for a rest.
But what if that's all in your mind? What if your body can go further and push itself harder? My guest today has written a book that focuses on recent research regarding mind over muscle - how we can push ourselves beyond what we think we're capable of by using a few neurological principles. His name is Matt Fitzgerald, and his book is called How Bad Do You Want It?