Hello, exercise can prevent varicose veins. Exercise is good for blood circulation. Walking or running will make the calf muscles transport more blood, and more blood will return to the heart. However, there are many controversies about whether exercise will aggravate the existing varicose veins. Wearing compression socks helps to prevent blood from gathering in the lower limbs during exercise. I suggest you raise your legs after exercise to relieve varicose veins. I hope I can help you.