Jack LaLanne, 96

Jack LaLanne, the seemingly eternal master of health and fitness who first popularized the idea that Americans should work out and eat right to retain youthfulness and vigor, has died. He was 96.

LaLanne opened what is commonly believed to be the nation's first health club, in Oakland in 1936. In the 1950s, he launched an early-morning televised exercise program keyed to housewives. He designed many now-familiar exercise machines, including leg extension machines and cable-pulley weights

Using principles taught by Jack LaLanne—including deep, thrusting military squats—Seth has torn his meniscus and must require surgery.

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