Which of the following is NOT a risk factor for developing venous disease?

High physical activity is recognized as a factor that generally contributes to healthier venous function rather than being a risk factor for venous disease. Regular exercise can improve circulation, strengthen the muscles that support the veins, and promote overall vascular health. This is in contrast to sedentary behavior, which can exacerbate venous insufficiency and increase the risk of developing venous disease.

On the other hand, obesity, age, and family history are well-established risk factors for venous disease. Obesity adds excess pressure on the veins, age is associated with decreased vein elasticity and valve function, and a family history of venous problems can indicate a genetic predisposition to venous disease. Therefore, while other factors enhance the risk, high physical activity is beneficial, making it the correct identification in this context.