The long-term research focus on the analysis of the lifestyle of families with prepubertal children and the dismal state of the increase in overweight and obesity in Czech adolescents led the authors to conduct research with families with children aged 3-8 years with the intention of uncovering patterns of all-day movement behaviour, including sleep and physical activity (PA), and formulating understandable recommendations aimed a tanchoring their healthy lifestyle. The presented monograph is methodologically based on a validated instrumental 24-hour monitoring using an accelerometer placed on the wrist of the non-dominant hand capable of detecting even the slightest human movement. A total of 396 families with at least one child aged 3-8 years completed this multiday monitoring of movement behavior.