Cold weather is a challenge in itself, with travel disruptions, snow and ice making even the simplest tasks take twice as long. But winter also poses a risk to the physical health of those who are at higher risk of heart attack, angina or high blood pressure, due to the way the body reacts to the cold.
A 2021 study in the journal Medicine (opens in a new tab) found that overall, cardiac arrests in the United States peaked in December and January, although the exact statistics are difficult to determine. Live Science spoke to experts to find out why.
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