Doctors are continuing to remind people to stay warm in the bitter temperatures.

"You can get frostbite with about a 15 mph wind in about 15 to 30 minutes," says Dr. Mark Papish, with MidHudson Regional Hospital.

The frigid temperatures this week could have serious affects on people's health. MidHudson Regional Hospital has already seen patients for both frostbite and hypothermia. "We’ve seen far more cases of hypothermia than we see of frostbite overall because people are out," says Papish.

It’s why they’re encouraging residents to layer up in at least three to four layers. “I have a blazer on underneath this. I have what I call my blanket jacket on," says Monique Rose, a Yonkers resident. “I worry about my kids more because they don’t think about it that much and so I try to remind them to stay warm and bundle up," says Eric Frank, a Hastings resident.

Doctors say certain types of clothing will keep you warmer than others.

"Wearing cotton has kind of the least benefit, compared to wool or other synthetic fabrics," says Papish.

But layering up isn’t the only warning.

With cold weather and snow often comes winter activities on frozen lakes and ponds. "You should always have a personal floatation device with you, a throw rope or something like that so you can get yourself out," says Joseph Pries, a New York State Forest Ranger.

Last week, two people were rescued on Lake Lucille in Rockland County after their canoe paddle got stuck on the ice. No one was hurt but officials say situations like these could end very differently.

"When you’re going out there, absolutely know the thickness of the ice and if you have any doubt, don’t go out," says Pries.

Pet safety is also important in frigid temperatures.

The SPCA Westchester says it’s important to limit the amount of time that pets are outside in this weather.

It suggests short walks or allowing them to be outside for about five minutes and then warming up for about an hour before going back outside.

The SPCA says there are ways people can entertain their pets inside, including games or teaching tricks.

They say while road salt can keep people from falling on ice, it can also be tough on dogs.

“I think it’s important to avoid high salt areas. Speak with your vet about any paw-safe products that can go on your paws if you do live in a place with high salt so you can protect that," says Lisa Ricker, behavioral and enrichment manager at the SPCA Westchester.

For outdoor cats, it suggests preparing them as soon as possible for cold conditions and make sure they have a safe place to go.