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9

I suggest you read the wiki article: In large amounts, and especially over extended periods of time, caffeine can lead to a condition known as caffeinism. Caffeinism usually combines caffeine dependency with a wide range of unpleasant physical and mental conditions including nervousness, irritability, anxiety, tremulousness, muscle ...


5

Unfortunately, for sake of a good answer, this could be so many different things. I'll try to highlight/mention as many as I can. To start, my best advice would talking with a good MD and ask about blood testing. That being said when the results come back I would recommend asking lots of questions and even consider having multiple MD's look at the results ...


5

Your caffeine consumption, practically speaking, probably does not affect your workouts positively or negatively. As @JohnP pointed out, caffeine studies are on greater amounts than a couple of cans of tea per day. According to the Sports Med. 2001;31(11):785-807, "ingestion of caffeine as coffee appears to be ineffective compared to doping with pure ...


4

This was a study of 18 individuals so not really large enough to draw too many conclusions. This was under moderate use of caffeine so it doesn't say anything about the ability to tolerate large amounts of fluid retention. What is, worryingly, not mentioned is the risk of hyponatremia from fluid retention. Lastly, I'm not sure you can conclude that you ...


4

To get into the details of this, there are two things I suggest you read/watch: Check out this article: Caffeine, Stress and Your Health: Is Caffeine Your Friend or Your Foe? A snippet from it points to one specific hormone: Cortisol - Can increase the body’s levels of cortisol, the “stress hormone”, which can lead to other health consequences ...


3

There can be a number of issues at work here, and to really understand what's going on, you'll need to talk to your doctor. It's not normal to always be fatigued in the way you are describing. There are a number of things you need to be asking yourself: Am I sleeping enough? Insufficient sleep causes a multitude of problems including fatigue. NOTE: ...


1

This probably ought to go without saying, but prioritize doctor advice over nostrums offered by coaches, friends, random internet people, etc. There's a lot of confusion out there between "needs supplementation because deficient in this specific nutrient" and "MOAR SUPPLEMENTS! AND GREEN TEA!" Most people are getting sufficient nutrients in their diet and, ...



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