As a dedicated runner, it's natural to be concerned about the effects of physical activity on dermal fillers. The good news is that being highly active, including running, generally does not pose a significant risk to the stability or appearance of fillers once they have settled properly. Fillers, especially those based on hyaluronic acid, are designed to integrate into the facial tissue and withstand normal facial movements and activities. However, it's usually recommended to avoid strenuous exercise for at least 24 to 48 hours after the injection. This short period allows the filler to stabilize and minimizes the risk of increased swelling or bruising at the injection sites. After this initial period, running or other high-impact activities shouldn't cause the fillers to sag or drop. The fillers are quite resilient and are not significantly impacted by such motions. In fact, maintaining a healthy and active lifestyle can be beneficial for your overall skin health and well-being. Always ensure that your treatments are performed by a qualified and experienced professional, who can provide the best advice tailored to your specific situation and the type of filler used. They can offer more detailed guidance on post-treatment care and how to best integrate your active lifestyle with cosmetic treatments.