Sleep is a biological need crucial for human health and well-being [1]. During periods of sleep restriction or deprivation, general health is negatively afected, particularly the immune system, endocrine, physical, or cognitive functions [2–4]. While the general sleep recommendations advocate that adults obtain 7–9 h of sleep per night to maintain optimal health and functioning [5], many adults do not comply with these recommendations. For athletes, often exposed to high-intensity training, it is recognized that sleep is the most important method for psychological and physiological recovery [6, 7]. Elite athletes report needing approximately 8 h of sleep per night
to feel rested [8]. However, elite athletes often sleep less than 7 h [8, 9] due to several potential sport and nonsport-related factors, which may vary across sports.