Erin Stern’s Longevity Workout: 6 Exercises to Improve Mobility, Agility, and Core Strength
Two-time Olympia Figure Champion Erin Stern may have retired from active competition, but when it comes to training her clients and tending to longevity, the buff beauty is as active as ever. Recently, Stern took to Instagram to share the moves that keep her bouncing throughout her life, and the best part is, no free