Toenail fungus may be gross but it's common, especially in runners. 

Running shoes are perfect little incubators for foot fungus.

The inside of shoes are hot, dark and moist. Running shoes can be the ideal environment for fungal infections. And you want to make sure you don't get a toenail fungus infections, you need to make sure you keep the fungus out of your shoes. 

But there are three simple precautions you can take to make sure you don't have a fungus farm in your running shoes. 

Today on the Doc On The Run podcast, we're talking about the 3 most important ways runners prevent foot fungus.