Cold winter weather can cause some common seasonal health problems. A familiar one is catching a virus. Spending more time indoors with centralized heating causes viruses to spread easily. Keep your immune system happy! Heart attacks are another issue, often linked to strenuous activity like shoveling, so take extra precautions. Freezing temperatures can cause asthma attacks – cover your nose and mouth when outdoors. Winter weather can also lead to more sitting around and result in weight gain, so be sure to keep active. Finally, depression can take hold in the winter – try to get enough sleep and sunlight each day.