5. Warm-up. Most pitchers don't like warm-up and tend to rush through it or skip
it altogether. These pitchers put themselves at added risk of injury. A good warm-up prepares the muscles for the explosive motion of pitching. A good warm-up routine will include stretching, throwing and running until the muscles are warm. I've seen pitchers throw a couple pitches from halfway and say that's all they need to warm up. This is worrisome because they then move into full speed pitching from the mound without any further preparation.