A new challenge to any other physical instructor in the world! / Charles Atlas.

Part of a correspondence course sent out in early 1939 giving instructions in how "in just 7 days YOU can have a body like mine" by using Dynamic Tension. The leaflet includes numerous photographs of Charles Atlas posing in leopardskin trunks, flexing his muscles for all he's worth! The back page has the headline (in red): "Don't waste your time or money on ROT!".