The research is there, people are using this technique for fat loss, anit-inflammatory benefits and recovery. It's relation to breath control, alkalosis, and controlling core temperature is also being currently validated through the University of Amsterdam with Wim Hof and Wim Hof method. Cold thermogenesis pointers can be the keys to tipping you into the last 5-10% of fat loss, from cold showers, to ice packs to the baths themselves, apply and let me know where you are at and let me know any questions you may have. Stay healthy!