It might be worth the author noting that the reason this works is that the area that it's placed at the base of the neck changes perceived thermal strain. it is an ancient trick that when one holds an ice cube there it makes you feel temporarily cooler. The brain gets false information as to the surface temperature and makes slightly different cooling decisions.
So your body can get to higher temperatures whilst you have a longer period of tolerance of it. There is some question as to the safety of this for people who might not be of athletic ability etc. It likely will allow increased, often significantly, blood pressure. In older people this could be dangerous if that is the case.
So your body can get to higher temperatures whilst you have a longer period of tolerance of it. There is some question as to the safety of this for people who might not be of athletic ability etc. It likely will allow increased, often significantly, blood pressure. In older people this could be dangerous if that is the case.
https://link.springer.com/article/10.1007/s10072-020-04349-x https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3017491/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5968886/