Abstract
The article deals with sleep as a means of passive regeneration, from the point of view physiological, but mainly focuses on the quality of sleep in children. It also solves the issue of sleep hygiene, which is usually affected by their parents in children.
Last but not least, attention is paid to the factors that affect the quality of sleep in children and adolescents affect and in this context the effect of physical activity on sleep and vice versa. Attention should be paid to the quality and duration of sleep in children both in families and at school and in sports sections, as these are key human health and performance factors.