Many people may find that when running in winter, their heart rate tends to be lower than in other seasons. Although the lower temperatures during winter running should theoretically cause an increase in heart rate, in fact, many people's heart rates are lower than before when running in winter.
The cold air in winter can stimulate the body to produce more adrenaline and norepinephrine, and these hormones can lower the heart rate. At the same time, cold air can also constrict blood vessels to reduce heat loss, which may also lead to a lower heart rate.
In winter, due to lower temperatures, the human body needs more oxygen to generate heat to maintain body temperature. Therefore, in order to save energy and reduce heat dissipation, the human body will reduce the intensity of exercise, thereby reducing the number of heart rate beats. In addition, in response to cold environments, the body will increase fat storage, which may also reduce exercise intensity and heart rate.
As running training progresses, the heart muscle gradually strengthens, making it more efficient at pumping blood and delivering oxygen. This causes the heart to beat less often at the same intensity of exercise, resulting in a lower heart rate. In addition, after a period of training, the body's aerobic exercise capacity will also be improved, which may also lead to a reduction in heart rate.
Age and health are also important factors that affect heart rate. As we age, the heart muscle gradually loses its elasticity, causing the heart's ability to pump blood to decrease, causing the heart rate to rise. However, when running in winter, older people may experience lower exercise intensity and heart rate due to the stimulation of cold air. In addition, health conditions can also affect heart rate. For example, people with heart or respiratory conditions may find it more difficult and uncomfortable to run in the winter, which can lower their heart rate.
In short, the decrease in heart rate during winter running is mainly due to the stimulation of cold air, adjustment of exercise intensity, the impact of training effects, and the impact of age and health status. However, it is important to note that although your heart rate may be lower when running in winter, you still need to be cautious about exercise intensity and maintain good exercise habits. If you feel unwell or have serious health problems, seek medical advice promptly.
