Poor posture during exercise can lead to several common issues, including muscle imbalances, strain, and chronic pain. For instance, slouching can cause shoulder and back pain, while improper alignment may stress joints during movements. These problems not only detract from performance but also increase the risk of injuries. Over time, poor posture can lead to decreased flexibility and even hinder overall strength development. It's essential to focus on proper form and body alignment during workouts to prevent these complications and ensure a safe and effective exercise routine.