SINGAPORE - All work and no play makes Jack a dull boy. Spending all day with electronic devices and no outdoor play would be worse - it makes Jack a sedentary child.

In this age of digital distractions, are children in Singapore getting enough physical activity necessary for their health and development?

ST Video spends a day with three pre-schoolers - Vienna Lee, four; Kaenan Seto, five; and Peter Cheo, three - to track their daily routine.

To find out whether they have enough exercise every day, Mount Elizabeth Hospital paediatrician Dr Low Kah Tzay analyses their activity log.

Under new rules to be introduced by the Early Childhood Development Agency (ECDA), full-day pre-school programmes must devote at least an hour to physical activity every day.

And at least half of this time must be spent outdoors, said Mr Eugene Leong, ECDA's chief executive. Currently, pre-schoolers get 30 minutes of exercise daily.

NurtureSG, a taskforce aimed at encouraging young Singaporeans to adopt healthy habits, announced this recommendation in February.

Taking things a step further, Dr Low, who has been a paediatrician for more than 20 years, also suggests that parents should also lead by example and adopt an active and healthy lifestyle.

"That is the most effective way to bring up active and healthy children," he said.

Watch the video to find out if these three pre-schoolers are clocking in enough active play.