The 75 Hard Challenge can help improve mental clarity by promoting habits that support cognitive function and overall well-being. The program's structure encourages participants to engage in regular physical activity, which has been shown to enhance mental clarity and focus. The emphasis on nutrition and hydration also supports brain health, with a focus on whole foods and adequate water intake. Additionally, the challenge includes a daily reading requirement, providing an opportunity to learn new strategies for improving mental clarity and focus. The mental toughness aspect of the challenge helps participants develop the discipline needed to maintain a clear and focused mind.