Good point Fracty, freezing water can boost the immune system and circulation.
The FIR opens the pores to let out the morgs, because of the heat...i guess freezing water will have the opposite effect?
Here's an interesting article about the use of FIR which effectively heals skin wounds and bed sores and helps regenerate collagen (in rats anyway lol)
Promotive Effects of Far-Infrared Ray on Full-Thickness Skin Wound Healing in Rats -- Toyokawa et al. 228 (6): 724 -- Experimental Biology and Medicine
You know what questions coming next....SO
can FIR kill insects, fungi, bacteria, viruses?
Well, it looks like it's more effective than a warm bath to kill the bacterias e.coli and s.aureus, according to this:
CiNii*-* Effect of Far Infrared Ray on Sterilizing of Bacteria
what else....dig dig dig
Jo xxx