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The first stage of cold water immersion syndrome, the cold shock response, includes a group of reflexes lasting under 5 min in laboratory volunteers and initiated by thermoreceptors sensing rapid skin cooling. Water has a thermal conductivity 25 times and a volume-specific heat capacity over 3000 times that of air; subsequently, surface cooling ...
Shortness of breath (SOB), known as dyspnea (in AmE) or dyspnoea (in BrE), is an uncomfortable feeling of not being able to breathe well enough. The American Thoracic Society defines it as "a subjective experience of breathing discomfort that consists of qualitatively distinct sensations that vary in intensity", and recommends evaluating dyspnea by assessing the intensity of its distinct ...
2. Cold-Weather Workouts. A workout in cold temperatures can also induce chills quickly, especially when you push hard and then stop. Active muscles produce heat, but once you stop exercising ...
In addition to cold injuries, breathing cold air can cause dehydration, because the air is warmed to body temperature and humidified from body moisture. [15] There is also a higher risk of sunburn due to the reduced blocking of ultraviolet by the thinner atmosphere.
Wrapping up warm, eating well and exercising indoors will help keep your blood pressure levels stable this winter.
When warm, wet air from the lungs is breathed out through the nose, the cold hygroscopic mucus in the cool and dry nose re-captures some of the warmth and moisture from that exhaled air. In very cold weather the re-captured water may cause a "dripping nose". Ideally, air is breathed first out and secondly in through the nose. [9]
Air stagnation can lead to a decrease in air quality, which could cause health problems such as respiratory issues or diminished lung function for certain individuals. [8] Poor air quality can also cause some symptoms such as difficulty breathing, coughing, and headaches. [ 8 ]
Asthma is a common condition and affects over 300 million people around the world. [3] Asthma causes recurring episodes of wheezing, breathlessness, chest tightness, and coughing, particularly at night or in the early morning. [4] Exercise-induced asthma is common in asthmatics, especially after participation in outdoor activities in cold weather.