“Unlocking the Secrets: The Surprising Answers to Your Most Embarrassing Questions Revealed!”

Reddit user u/faykin had a lot to say about this topic:
“Your leg veins have one-way valves in them. They work when the skeletal muscles around them contract and release. When you are walking around, the flexion/relaxation of the walking muscles is literally pumping the blood back to your torso. When you are standing still, you aren’t getting that pumping action naturally. You could flex/release your legs intentionally while standing, but it’s not nearly as effective as walking is.”