As a coach, some of my athletes swear by their ice bath after a long run. I advise them that while there is no physiological benefit to the ice bath, in moderation it shouldn’t be harmful to their training or recovery. It can have a large placebo effect. There is a lot of evidence based research showing that there is not a benefit or recovery from taking an ice bath. There is no significant difference between runners that use an ice bath vs. an active recovery approach. Active recovery meaning light intensity movement such as walking, light swimming or biking.
HERE is an article I helped with at #MapMyRun with several other coaches and our thoughts on Ice Baths!