In winter, the body’s natural response to cold — narrowing arteries to conserve heat — has the side-effect of raising blood pressure. That increase can stress the heart, especially for those already at risk. By adding a few heart-healthy changes to the routine, people can stay safer through the cold months.
source https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/arteries-naturally-constrict-in-winter-causing-high-blood-pressure-and-heart-attack-5-things-to-do-to-stay-safe/articleshow/125268533.cms
