In hot weather it can be very easy for physically active children to suffer from dehydration, heat exhaustion, or even heat stroke. A physically active child can be described as a child who participates in at least an hour of high intensity physical activity every day. Some examples of high intensity activity include team sports such as soccer, football or netball, swimming training, running or tennis.
It is known that children do not stop to drink as much as adults do and are likely to only stop when they are quite thirsty. At this stage it is likely that children are already mildly dehydrated.