Credit: Mark Wilson/Getty Images Photo: Michelle Obama Before: Darker-Haired In May 2013

First lady Michelle Obama is turning 50 tomorrow, but you’d never know it — not only does she look awesome, but she’s in incredible shape. However, if that ever changes, she’s developing a back-up plan.

First step: staying healthy and getting plenty of exercise to prepare for her body changing as she gets older, so she’s “not falling and breaking a hip one day.”

“I don’t obsess about what I eat, but I do make sure that I’m eating vegetables and fruit,” Michelle told People in a recent interview. “And as everyone knows, I do exercise.”

“I’m seeing myself shift from weight-bearing stuff — even though that continues to be important — and the heavy cardio and running, to things like yoga that will keep me flexible,” Michelle added.

And although as she gets older, Michelle is feeling a “greater sense of calm and certainty and maturity and confidence,” she acknowledges the fact that not everyone feels the same way, and they should be able to do what they need to in order to gain that kind of self-confidence — even if it means going under the knife.

“Women should have the freedom to do whatever they need to do to feel good about themselves,” Michelle said. “Right now, I don’t imagine that I would go that route, but I’ve also learned to never say never.”

Source: People via E! Online