Redefining Strength is a company founded by Cori Lefkowith in 2014, focused on providing personalized fitness and nutrition coaching. The company aims to empower individuals through a science-backed approach to health and fitness, offering guidance and mentorship to help clients achieve their fitness goals. Redefining Strength offers a range of programs and resources, including workout programs and nutritional strategies, designed to help clients build habits and redefine their strength at any age. The company emphasizes the importance of customization in achieving sustainable and effective results.