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.
The talk test is a simple way to measure relative intensity. In general, if you're doing moderate-intensity activity you can talk, but not sing, during the activity. If you're doing vigorous-intensity activity, you will not be able to say more than a few words without pausing for a breath.
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According to ncbi the most abundant mineral in the human body makes up about 1.5 to 2% of total body weight, I think that answers your question
