I recall reading a study about how the nerves in the legs deteriorated as we got old, and how stimulating them with "noise" significantly reduced the risk of fa

I recall reading a study about how the nerves in the legs deteriorated as we got old, and how stimulating them with "noise" significantly reduced the risk of falling. The method of stimulation was to have slightly bumpy surface under their feet, though can't recall if they used special socks or inlays or what. IIRC the idea was to boost the stimulation when they walked to revert or counteract the deterioration of the nerves.