You’re not surprised, are you?
See NY Daily News for the details:
“Cue the sad trombone. America’s kids ranked 47 out of 50 countries measuring aerobic fitness — a key factor for overall health — in a study published in the British Journal of Sports Medicine. By comparison, Tanzania, Iceland, Estonia, Norway and Japan raced away with the top five slots. The least fit country: Mexico.”
Source: Oh no! U.S. kids among least fit in the world – NY Daily News
Canadians were in the middle of the pack.