1927
German children perform exercises in the snow.
Image: A. & E. Frankl/ullstein bild/Getty Images
c. 1895
Boys work out with dumbbells in a gymnasium.
Image: Hulton Archive/Getty Images
1899
Students perform exercises at Western High School in Washington, D.C.
Image: Universal History Archive/UIG/Getty Images
c. 1900
German schoolgirls hang from exercise bars.
Image:...
