Everyone deals with their health, but the urgency and importance is greater as your age gets higher. But Dr. Pamela Peeke, Chief Medical Correspondent for Discovery Health TV, knows exactly what you need to do to keep yourself fit and healthy no matter what age you are.

She’s a regular on Oprah Winfrey’s show and has written best-selling books like “Fat over 40,” and her latest, “Fit to Live: The 5-Point Plan to Become Lean, Strong and Fearless for Life.” The book, a sort of manual, highlights the ways women and men over 40 can deal with the biggest health challenges facing them.

Peeke has embraced change and challenges everyone to do the same. She says the problem with our society is stress and the fact that stress directly relates to weight gain.

She talks with Growing Bolder about her grade for America’s fit level.