What is a potential consequence of not including a proper warm-up in training?

Not including a proper warm-up can lead to muscle tightness and sore joints. A warm-up serves to gradually increase heart rate, enhance blood flow to muscles, and improve joint lubrication. Without these physiological changes, muscles can remain stiff, leading to decreased range of motion and an increased likelihood of strains or sprains during intense physical activity. Additionally, the lack of preparation can cause discomfort in the joints, as they may not be adequately prepared for the demands of the workout.

Thus, incorporating a proper warm-up is essential for optimal muscle function and joint health, helping athletes move more freely and effectively, and ultimately protecting against injuries that can arise from abrupt or intense movements.