Jane Fonda, Yoga and ‘Pumping Iron’: How the 1970s Changed Fitness Forever
“I think of women’s fitness history as B.J. and A.J. — Before Jane and After Jane,” Ken Alan, a kinesiologist who taught aerobics in the 1970s, said in a 2020 interview. Ms. Fonda initially entered the exercise business to raise money for her husband, the progressive activist Tom Hayden, who had dreams of running for…