What is one of the roles of working reps during heavy days?

During heavy training days, one of the key roles of working repetitions is to improve neuromuscular adaptation under load. This is critical in CrossFit, where the focus is often on functional movement and strength development. As athletes perform reps with heavy weights, their body learns to recruit more muscle fibers effectively, which enhances overall strength and power output.

This process involves the central nervous system and involves refining the communication between the brain and the muscles, allowing for more efficient and coordinated movements. Over time, consistent exposure to heavy load during working reps leads to strength gains as the muscles adapt to the stress imposed on them.

This is distinct from the other options listed. While cardiovascular fitness, flexibility, and recovery techniques are important components of overall athletic performance, they do not specifically pertain to the primary adaptation sought during heavy lifting sessions. Instead, the emphasis on neuromuscular adaptations during heavy days underpins the overall strength training methodology utilized in CrossFit.