This was written by a UiTM Professor with the national sports board.
He has been advising people not to wet the head and hair first when showering as this is the wrong sequence.
This causes the body to adjust its temperature too quickly because we are warm-blooded.
By performing this incorrect sequence, blood rushing up to the head may cause capillary or artery breakage, hence, a stroke and a fall.
The right way to shower is to start wetting the body from the feet up to the shoulders slowly.
A sensation of vapor coming out of the crown on the head or bristling of body hair may be felt for some people.
Follow this procedure then shower as usual
This is especially useful for people with high blood pressure, high cholesterol and even migraine.