Jane Fonda tells PEOPLE in an exclusive interview that her fitness routine has remained the same over the years — just at a different pace over time.

At 87, Jane Fonda is the first to acknowledge that her fitness habits look different than they did when she was taking over VHS tapes back in the 80s. But like the activist-actress-entrepreneur herself,

Jane Fonda, 87, says her workout routine hasn't changed much over the years. "I essentially do everything I used to do, just slower," Fonda told People, adding that she loves walking. Research has shown that walking just 4,000 steps a day can lower a person's risk of dying early. Jane Fonda may be 87, but she's still as fit as a fiddle.