"When a person stands or sits for extended periods, gravity prevents blood from flowing upwards, causing it to pool in the lower extremities. This pooling can lead to the weakening of the elastic walls of the blood vessels over time. As a result, individuals may observe bulging veins in their legs. Varicose veins are a condition affecting the veins in the legs, specifically the impair... https://sahyadrihospital.com/videos/causes-of-varicose-veins-dr-kaurabhi-zade-sahyadri-hospitals/