When the weather warms up, many of us turn to a cold shower to cool down. But ...
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When the weather warms up, many of us turn to a cold shower to cool down. But while this feels like relief, it may not actually help.Cold exposure causes blood vessels near the skin to constrict, reducing blood flow. So, instead of releasing heat, a cold shower traps it around your internal organs. You're tricking your body into conserving heat, not shedding it. Depending on how cold the water is, sudden exposure can even trigger dangerous consequences. Water at 15°C can provoke the cold shock response-vessels constrict rapidly, blood pressure rises, and the heart pumps against increased resistance.This can be risky for people with heart conditions like coronary artery disease. Cold shock may also cause irregular heartbeat-or in extreme cases, even death-especially when going from very hot to very cold conditions.Thankfully, these events are rare and unlikely with a quick cold shower at home. Still, you might want to skip the cold plunge or avoid an ice bath on a hot day. Another reason: it may not be very effective for hygiene. Sweat mixes with sebum and bacteria to produce body odour. Cold water is less effective at removing sebum and debris than warm water, so odour can linger.Cold water also tightens skin, potentially trapping dirt in pores, leading to blackheads or acne. Warm or lukewarm water helps loosen and dissolve these materials.As you plan your escape from the heat, a lukewarm or cool shower-not a cold one-is a safer, more effective choice. Let your body release heat naturally, and cool off gradually to avoid shocking your system.Adapted from: https://theconversation.com/why-taking-a-cold-shower-on-a-hot-day-might-be-a-bad-idea-259074How does the writer organize the ideas in the text?