
In this short video, fitness coach Eric Roberts explains why the common cushioned, curved‑sole running shoes are a poor choice for weight‑training movements such as squats, lunges, and deadlifts. He describes how the foam‑filled, rocker‑bottom design is built for impact absorption while running, but it creates instability when lifting, which can compromise joint alignment, increase the risk of knee and hip injuries, and reduce strength output. Roberts recommends using flat‑soled shoes with a solid, non‑foamy sole for better ground contact, greater stability, injury prevention, and the ability to lift heavier loads. The advice is presented in a conversational, instructional tone aimed at helping viewers make safer footwear choices for strength training.










