"Vitamin D levels in the blood linked to cardiorespiratory fitness Vitamin D levels in the blood..."

“Vitamin D levels in the blood linked to cardiorespiratory fitness Vitamin D levels in the blood linked to cardiorespiratory fitness”

- https://www.sciencedaily.com/releases/2018/10/181030091449.htm

source http://physiquesportsuk.tumblr.com/post/179601247179