The primary goal of a general warm-up in CrossFit training is to increase core temperature and blood flow to the muscles. This process prepares the body for the demands of physical activity by enhancing muscle elasticity and the efficiency of oxygen delivery to the working tissues. When the core temperature is elevated, muscles become more pliable and responsive, which can improve overall performance during subsequent workouts. Additionally, increased blood flow enhances nutrient and oxygen delivery, which is essential for maintaining energy levels and facilitating muscle contractions.
Improving flexibility and range of motion is typically more specific to a dedicated stretching routine rather than the main aim of a general warm-up. While addressing specific muscle groups is important in a comprehensive warm-up or in specific training sessions, the general warm-up serves a more broad purpose. Similarly, while reducing the risk of injury during heavy lifting is a valid consideration, the immediate focus of a general warm-up is on preparing the body through physiological changes rather than specific injury reduction strategies.