Anastasia on Instagram: "There’s a lot of noise around cold exposure but science actually helps us understand what’s really happening. 📌 A 2025 systematic review in PLOS ONE found that cold-water immersion (like short ice baths or cold showers) can reduce stress, improve sleep quality, and boost overall wellbeing - even after just 20–90 seconds of exposure.  📌 Research on cold exposure responses shows that immersion triggers automatic physiological changes like vasoconstriction followed by va