Exercise makes your blood vessels produce more nitric oxide, which keeps them loose and lowers blood pressure for hours after working out.

“Physical activity is one of the most powerful blood pressure interventions we have. And the reason might surprise you. It's all about that nitric oxide. Again, when you exercise, particularly aerobic exercise, you create what's called a sheer stress on your blood vessel walls. This stimulates endothelium. That's the inner lining of your blood vessels to produce more nitric oxide. Now, here's where it gets really interesting. That effect doesn't just stop when you finish exercising. It lasts for hours after the session ends, which is precisely why regular movement creates sustained pressure reduction.”