As summer heat and humidity rise, so does sweating — and for many people, that means jumping in the shower. But doctors say this everyday habit comes with hidden risks in hot weather. Certain mistakes can trigger blood pressure swings, heart rhythm problems, and even fainting or sudden cardiac arrest.
When you're sweating, your capillaries are dilated. If you then shower with cool water, it can cause sudden blood vessel constriction and blood pressure fluctuations — potentially triggering a cardiovascular or cerebrovascular event.
After a meal: Showering right away may reduce blood flow to the heart.
On an empty stomach: Your blood sugar is already low, making you prone to dizziness and weakness.
After drinking alcohol: Showering immediately can cause sharp fluctuations in blood pressure and heart rate.
Water that's too hot dilates blood vessels and speeds up blood flow, putting extra strain on the heart — potentially causing palpitations or even triggering heart rhythm problems.
Water that's too cold constricts blood vessels and raises blood pressure, reducing blood supply to the heart muscle, which may lead to chest pain (angina) and other issues.
Long showers cause skin blood vessels to dilate, redirecting blood flow away from the brain and heart. This can lead to dizziness, palpitations, and in severe cases, heart rhythm problems or fainting.
Many people keep bathroom doors and windows tightly shut while showering, which makes the room stuffy and low in oxygen. In this environment, you're more likely to feel chest tightness and palpitations. With less oxygen reaching the heart, the risk of cardiovascular events rises accordingly.
Standing for a long time in the shower causes blood vessels in your legs to dilate, reducing blood flow to your brain. This can make you feel lightheaded or even cause you to faint.
For example, turning on cold air conditioning or taking a cold rinse right after a shower. After bathing, your pores are open and blood vessels are dilated. Exposing yourself to sudden cold causes rapid vessel constriction and blood pressure/heart rate swings — which could trigger angina or even sudden death.
When we exercise, get emotional, or are in a hot environment, our sweat glands produce sweat that evaporates to cool the body — this is the kind of sweating you can clearly feel. But even when you're resting in a cool room, your skin is constantly sweating without you noticing; this is called insensible perspiration.
Sweat contains trace amounts of sodium, chloride, potassium, vitamins, and minerals. In areas like the armpits and groin, specialized apocrine glands produce thicker, oilier sweat that contains proteins, sugars, and ammonia. When bacteria get involved, that's when body odor really kicks in.
(Source: China Daily)
Related News:
Heatwave hits! How to save the most electricity when using air conditioning this summer
Comment