Do you guys get blisters on your feet while running? The above video by ashleybordenfitness , provides a helpful tip for runners to prevent these blisters with a “heel lock” or “lace lock” that creates extra friction between the laces at your ankle. Me myself, I’ve always wondered what the extra shoelace hole on my shoes were for. Up till recently. I’m definitely going to use this for my upcoming Deuter Trail Run tomorrow.