If you’re venturing outdoors, dressing properly is key. “Dressing in layers, wearing loose fitting layered clothing is the best to trap heat and stay dry,” says Faraz Covelli. A hooded coat or hat will help prevent heat from leaving through your head, while swapping gloves for mittens will keep your fingers cozy.

The National Weather Service on Thursday warned that “dangerously cold and very dry Arctic air” will spill into the continental United States and lead to “life-threatening risk of hypothermia and frostbite” as temperatures drop well into negative territory, creating some of the coldest weather on Earth.