Dr. Duncan Simpson has a PhD in Sport Psychology and is the Director of Personal Development at IMG Academy, a multi-sport training institution in Florida. He has worked with children, high school students, and professional and Olympic athletes in a range of sports.

Duncan was formerly an Associate Professor in the Sport, Exercise, and Performance Psychology Program at Barry University. He is also a certified consultant with the Association of Applied Sport Psychology.

Given his experience and education, Duncan possesses a deep knowledge of the mental game that athletes are faced with.

In our conversation, Duncan covers a variety of mental skills and how athletes utilize them to gain a performance advantage:

• Creating short- and long-term focus
• Avoiding external distractions
• Doing self-assessments
• And how to apply it all to your own running
• Connect with Duncan on Twitter
• Email him at duncan.simpson@img.com
• Train your mind

A big thanks to Elemental Labs for their support of this episode! They make electrolyte drinks for athletes and low-carb folks with no sugar, artificial ingredients, or colors.

They're also offering free product: just pay for shipping and you can get their sample pack including 8 packets of citrus, raspberry, unflavored, and orange salt varieties.

Elemental Labs' products have some of the highest sodium concentrations that you can find. Anybody who runs a lot knows that sodium, as well as other electrolytes like magnesium and potassium, are essential to our performance and how we feel throughout the day.

The citrus flavor has quickly become my favorite and I'm drinking one a day now to help me get enough fluids in our dry Colorado air. It's tasty and delicious and I find that I'm not peeing every 45 minutes throughout the day, which might be an indication I wasn't eating enough sodium.

There's now mounting evidence that higher sodium intake levels are not unhealthy – and athletes need substantially more than your typical sedentary person. Of course, ask your doctor if you're worried. But for those athletes running outside in the heat, an electrolyte replacement makes a lot of sense.

So check out Elemental Labs to try their sample pack for free and get your hydration optimized for the upcoming spring season.