In a 2026 systematic review, researchers examined the effect of heat and cold after exercise. They found hot water immersion may improve sleep and anaerobic performance, while cold water may inhibit power output and blunt adaptation to exercise.
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The Common Muscle Recovery Myth That's Still Debated By Scientists — BGR
If you've spent any time browsing exercise social media, you've come across some big claims about muscle recovery, some of which are debatable.