Runners are known to push into pain in pursuit of their goals. Setting a new 5k PR or training for a marathon involves an unavoidable degree of discomfort. However, some nagging aches and pains are our body’s way of telling us something needs fixing. Whether you are a rearfoot or forefoot runner, a large amount of force goes through your ankle when you run1. While knee or ankle pain could be normal delayed-onset muscle soreness (DOMS) from running, it could also be related to ankle mobility2.