The cool temperature slows down metabolism, which is key to long life.

But several explanations exist that strict diet, low in calories but high in nutrients may slow aging apart from life span extends coz an important factor in aging is DNA damage caused by free radicals, highly reactive oxygen-containing molecules formed during normal metabolism. Eating less leads to a slower metabolism and fewer free radicals.Therefore, it makes no sense to ask if the survival of any one person or even the whole of humankind matters beauty than life span. dooo .anybody loves life span with out beauty,,