The risk of stroke (cerebrovascular accident) is high during the cold season. Low temperatures cause blood vessels to constrict, increasing blood pressure and making blood thicker and more prone to clotting, which can lead to blockages or ruptures of brain blood vessels, resulting in a stroke. Significant daily temperature differences (cold mornings and evenings, warm afternoons) can also increase the rate of hemorrhagic stroke.

During the cold season, you should exercise between 7 am and 9 am or in the afternoon when temperatures are warmer and more stable. Avoid exercising too early, especially before 6 am. At this time, temperatures are low, and the body needs more time to adapt. Intense activity immediately can easily increase the strain on the heart.

Those exercising in cold weather should follow several precautions: warm up thoroughly, prioritize warming the body and joints indoors before going outside to help blood circulate well and reduce the risk of muscle stiffness, cramps, and injuries. If it is too cold, wear two or three layers of clothing, long pants, a hat, socks, and a mask to limit cold wind. However, avoid dressing too warmly, which can cause stuffiness and a sudden increase in body temperature during activity.

People exercising in the morning in Hanoi. Photo: Giang Huy

In cold weather, the body still loses water through sweat and respiration; therefore, it is essential to drink enough water during and after exercise. When it is extremely cold, rainy, or heavily foggy, individuals should prioritize exercising indoors to avoid the risk of hypothermia and cardiovascular events.

Avoid sudden changes in posture, especially upon waking; instead, sit up slowly, massage your limbs, and take deep breaths before standing. Choose exercises suitable for your physical condition, avoid overexertion, and prioritize gentle activities such as slow walking, yoga, and stretching.

After exercising, rest for about 20-30 minutes to allow your body temperature to stabilize and sweat to dry completely before showering. Only take a moderately warm shower to avoid sudden temperature changes that could negatively affect your health.

Master, Doctor Le Van Ngan

Department of Neurosurgery and Spine

Tam Anh Hanoi General Hospital