Good morning. Yes, this is a 'hot' topic. I was interviewed recently with a number of colleagues regarding this topic (Sports Medicine Experts Move On with Evidence-Based Advice. http://vancouversun.com/news/local-news/sports-medicine-experts-move-on-with-evidence-based-advice). Take home message: it isn't about NOT icing - it is about icing at the right dose at the right time for the right reason. Icing has been shown to reduce pain ( Algalfy & George, 2007, Herrera et al, 2010) but not to assist with clotting (managed by platelets) and not to reduce 'swelling' that already exists. It is best used early in the inflammatory cycle (first 48 hours) to reduce the metabolism of the cells (Merrick, 1999) which have not been damaged so that they are not secondarily damaged from the 'toxic debris' of the cells that were injured in the initial injury. More importantly, it reduces the activity of neutrophils which also exacerbate inflammation (Puntel et al, 2013). Bottom line: Too much ice is bad but too much inflammation is also bad. Here are some refs: Decreased cellular metabolism Merrick et al 1999, Osterman et al, 1984, Sapega et al 1988; Altered white cell activity within the vasculature Sapega et al 1988, Lee et al 2005, Schaser et al 2006, Schaser et al 2007, Westermann et al 1999; Reduced muscle necrosis Schaser et al, 2007; Reduced apoptosis Westermann et al 1999; Prolonged cryotherapy – effects after soft tissue injury (Schaser et al, 2007); Is Ice Right? (Collins, 2007) I hope this helps.