I'm posting an excerpt from another post of mine as an update of my overall results with cold showers:
Last year in July I got a "strange illness" that caused an inflamed throat and left ear, and what felt like a disabling fatigue with a constant head pressure. This lasted throughout August until the mid September. Several possibilities were mentioned, all of which were discussed elsewhere.
Well, last night I had an experience that I think may finally explain what went wrong with me. In two words: Cold showers.
I stopped doing cold showers in mid September which was shortly followed by recovering my health back. The penny only dropped yesterday though. Not having done a cold shower since then, last night I got home and decided to start with a hot shower and slowly decrease the temperature to almost cold.
Right after the shower I felt pretty good, but about 40m after a sudden bout of fatigue with a bad headache hit me. My throat suddenly felt sore and my left ear started to ache again. The most striking though was that all of those symptoms felt immediately familiar, it was precisely what I had been feeling throughout the Summer, the same type of disabling fatigue with a heavy head, the same sensation of having to drag my body around. I went to bed and woke up fine today, but have been thinking about this and a picture began to emerge. I started with the cold showers in March/April, although it took me a while to actually reach full cold. At the time I only noticed negative symptoms, the ones I described above, when and if putting my head under cold water or jumping into cold water instead of lowering the temperature gradually. This should have been a clear warning sign for me, but it passed me by...
I gradually began to feel worse, and because the condition turned into a constant instead of something that would only manifest after any specific action, I didn't connect the two. I also remembered that the last time I took a cold shower in September I felt so bad that I (finally) decided to simply stop. My health returned to normal from that point on. It has taken me a lot of time to realize something that should have probably been very obvious, but alas, if what I'm perceiving now is correct I did get it in the end even if I'm slapping my forehead and saying "doh!"
I have always been VERY sensitive to cold, and the cold showers helped me in becoming more resistant. However, I now realize that my body isn't at all prepared for that intensity.
Has any of you experienced anything similar?