The Canadian 24-Hour Movement Guidelines¹ for the Early Years combine physical activity, sedentary behaviour and sleep guidelines and show the interrelationship between all three behaviours using a 24-hour clock. The Guidelines are divided into infants (less than 1 year), toddlers (1-2 years) and preschoolers (3-4 years). According to the Guidelines for each group, a healthy 24 hours should include the following.

Infants
Move: involve infants in physical activity throughout the day particularly through floor-based play. For those not yet mobile, include 30 minutes of tummy time spread throughout the day.
Sleep (includes naps): 14 to 17 hours (infants aged 0-3 months); 12 to 16 hours (infants aged 4-11 months).
Sit: do not restrain for more than 1 hour at a time (e.g. stroller or high chair); screen time is not recommended.

Toddlers
Move: at least 180 minutes throughout the day.
Sleep: 11 to 14 hours including naps, with consistent bedtimes and wake-up times.
Sit: do not restrain or sit for more than 1 hour at a time (e.g. stroller or high chair); screen time is not recommended for children under 2; for those aged 2 years limit screen time to no more than 1 hour.

Preschoolers
Move: at least 180 minutes throughout the day of which 60 minutes is energetic play.
Sleep: 10 to 13 hours including naps, with consistent bedtimes and wake-up times.
Sit: do not restrain or sit for more than 1 hour at a time (e.g. stroller or high chair); limit screen time to no more than 1 hour.

¹Canadian Society for Exercise Physiology. 2017. Accessed March 22, 2018 at: http://csepguidelines.ca/wp-content/themes/csep2017/pdf/PAR7972_24Hour_Guidelines_EY_En-4.pdf