What cumulative effect can arise from repetitive motions?

Repetitive motions, such as those common in hairstyling—like cutting, curling, or styling hair—can lead to strain and injury to muscles and joints. Over time, performing the same movements repeatedly can cause wear and tear on tendons, muscles, and joints, resulting in conditions such as tendonitis, carpal tunnel syndrome, or other musculoskeletal disorders. These injuries often develop gradually and may cause pain, discomfort, and decreased mobility, ultimately affecting a stylist's ability to work effectively. While increased flexibility, enhanced strength, and improved cardiovascular health can be benefits of general physical activity, they do not specifically relate to the risks posed by repetitive motions in the context of hairstyling. Thus, the correct answer highlights the caution needed in repetitive tasks to prevent injury.