When athletes obtain optimal sleep, their mood, fatigue, mental and physical performance, recovery, and cognition improve while their risk of injury decreases. However, incorporating sleep as part of an athlete’s training regimen is often overlooked. Additionally, obtaining sufficient sleep can be difficult as athletes travel to tournaments — especially if it involves traveling across time zones. The change in time disrupts an athlete’s circadian rhythm, which can contribute to sleepiness and fatigue, and negatively impact an athlete’s performance. A recent study by the American Academy of Sleep Medicine (AASM) demonstrated that baseball players’ performance decreased as the season progressed due to frequent travel (i.e., disruptions in the sleep-wake schedule). Improving sleep could potentially improve performance and prevent injury in athletes, and in recent years, scientists have used partial body and whole-body cooling as a way to do this. Some results have been promising.