How strong is the evidence for Contrast Water Therapy?

Contrast water therapy (CWT) — alternating hot and cold water immersion after exercise — has a substantial randomized-trial literature behind it, but it paints a genuinely mixed picture rather than a clear verdict. That evidence is currently rated moderate (50/100), built on 6 published studies, including 3 meta-analyses -- a reasonable base, but not yet enough for full certainty.