This article is part of a series about getting fit in the new year. Check out the entire Man up! feature here.

Think those expensive running shoes are protecting your wheels from damage when you’re getting your cardio on? Not so, say some studies. All that cushioning may be causing your feet more harm than running barefoot. In fact, according to XRay Technician Schools, running in running shoes may exert more strain on your joints than walking in high-heeled shoes. (Imagine running a marathon in peep-toe pumps…)

They’ve put together a collection of stats, tips and barefoot facts that may convince you to shun running shod and go barefoot, saving you from wrenching a knee or blowing out an Achilles in your rubber-soled trainers.