Check her head and make sure there is no cranial damage, or if there is a concussion. She can not fall asleep either in the event she falls into a coma.
The radiation can damage molecular function and cause harm to our bodies
You could ask him/she if they wanted to come out side for 5mins then 10 the 15 the 20 and so on
but if that dousnt work give them a health talk talk about how being out of shape can affect how u like ur child hood and say that no o e can like aithout exersise and that thdy can do it
hope this helps
good day/night