It's important to only trust health information that is backed up by scientific proof because people can put things out there that might not be true, or even worse, make your health worse, whether that health is physical, mental, or emotional.
Fainting is a common symptom of heat stroke. The reason this happens to many people is the lack of fatigue. The best remedy is to keep yourself hydrated and have proper rest.
I hope it helps, Regards.
By making them exercise more often
