In the running community, there's been a lot of debate about whether heel striking - landing on your heel first when running - is harmful or not. Some studies suggest that it may increase the risk of injuries, due to the high impact force it creates. However, it's also important to remember that everyone's biomechanics are different, and what works for one runner might not work for another. Personally, I believe it's crucial to listen to your body and consult with a professional if you're experiencing pain or discomfort. So, while heel striking might be a concern for some runners, it doesn't necessarily mean it's dangerous for everyone.