The Greatest Sia
14 January 2015, 07:36
Heart's been hearing how a four year old boy from Berkshire called an ambulance for his diabetic mum.
Luke Stock, from Tilehurst, had to think on his feet when Helen Stock became hypoglycemic shortly after they left his gymnastics class on Monday afternoon.
The schoolboy recognised that his mum had low blood sugar - and checked to see if she was okay before calmly calling the emergency services and explaining what was happening.
Luke, who has recently started at Springfield Primary school stayed by Helen's side until the paramedic arrived.
Here's Helen telling Heart what happened as she remembers it: