Moderate-intensity physical activities will cause children to sweat a little and to breathe harder. On a scale of 0 to 10 (with 10 being an absolute maximum effort and 0 being completely at rest), moderate activities are about a 5 or 6. While doing moderate-intensity activity children should still be able to talk, but not sing along to their favourite song.
Vigorous-intensity physical activities will cause children to sweat and be out of breath. On a scale of 0 to 10 (with 10 being an absolute maximum effort and 0 being completely at rest), vigorous activities are about a 7 or 8. While doing vigorous activity children shouldn’t be able to say more than a few words without pausing for a breath.
For children who are not active, adding any amount of physical activity can provide some health benefits. For these children, it is appropriate to start with smaller amounts of physical activity and gradually increase duration, frequency and intensity as a stepping stone to meeting the guidelines.