64-Year-Old Fitness Fan Credits '90/10 Rule' Diet and Active Lifestyle for Youthful Appearance

Harrah Brown is a 64-year-old fitness fanatic who credits her youthful appearance to the "90/10 rule" diet she follows

She eats 90% nutrient-dense, whole foods at home like frozen berries, pistachios, salmon. And 10% "fun foods" when dining out

Harrah doesn't buy sweets, cookies, cakes, ice cream, processed foods. This helps her stay lean and lose belly fat

She works out 3 times a week and walks at least 1 mile daily in addition to her diet

Incorporating some of Harrah's diet staples like berries and oily fish can help delay aging and promote skin health