Jennifer Aniston gives a rare glimpse of her training routine - voila! health. Aniston is known for her vigorous workouts, five times a week.

But it was a back injury that encouraged her to "retrain" her mind and approach to fitness. "I'm in better shape than I was in my 20s. I feel better in mind, body and spirit. Everything is 100%," Aniston said in an interview with British Vogue earlier this year. The 55-year-old actress will officially join functional fitness company Pvolve in 2021.