03/08/2025
You have more than one heart, and a second heart resides quietly in your calf. This muscle is called the soleus muscle, and scientists now call it your "second heart." Why? Because it pumps blood from your legs back to your upper body, counteracting gravity and reducing the load on your true heart. But the key is, it only works when you're moving.
Experts from the Cleveland Clinic and Mayo Clinic warn that prolonged sedentary activity, whether sitting at a desk or standing without rest, can cause blood to pool in your legs, which can lead to swelling, varicose veins, and even blood clots. The solution is surprisingly simple: take an hourly brisk walk, stretch, or simply lift your heels while sitting. Even small, regular movements can stimulate your calf muscles and improve blood flow.
What's more, new research suggests that this tiny muscle may not only improve circulation, but also regulate blood sugar levels and boost metabolic health through movements like heel lifts while sitting. So the next time you're sedentary, remember: moving your legs isn't just about movement; it's medicine for your second heart.
Source: Cleveland Clinic, Mayo Clinic, Journal of Applied Physiology
