post everything you know about caffeine good or bad

[Lumberg]

Supposedly you will burn more fat while you have caffiene in your system. Part of the reason it can increase endurance in distance runners/cyclists. Whether that is suffient for BB, I don't know. People learn faster with caffiene also.

It shifts your energy consumption away from burning carbs and toward burning fat.

Also it reduces the perception of effort but has no true physiological effect, just psychological.

 

[dzuljas]

Oh yeah, it can increase muscle-fiber recruitment and people given caffeine felt that they were doing less work than they were without caffiene (there is a good study somewhere for that last comment).

at what dosage would it increase muscle-fiber recruitment, but not effect coordination?

 

[anthrax]

Also it reduces the perception of effort but has no true physiological effect, just psychological.

that's (IMO) the main benefit of caffeine : You don't feel so much the pain (or it delays it)

=> You train harder and longer
=> More cardio, more intensity, more fat burned

 

[faller]

>at what dosage would it increase muscle-fiber recruitment, but not effect coordination?

I guess it depends upon what the coordination is for, as well as your tollerance. If you have basically no tollerance, even 25 mgs should give some improvement, although it's usually 200mgs and up, and I mean WAY up!

 

[Animal]

You can get some nerve excitation, but I'd say an equal part of the population would likely get driven up the wall.

It switches your metabolism over to fat burning from glucose burning as it clears glucose out of the bloodstream

(Interesting that caffeine hasn't been looked as a way to suppress insulin!)

Anyhow, for many, that glucose clearing can be too severe and you actually get tired from the caffeine. It's hypersensitivity to caffeine though I don't remember the exact medical term for it.

 

[faller]

>You can get some nerve excitation, but I'd say an equal part of the population would likely get driven up the wall.

Very true. I like caffiene before lifting or running, but when taken before mountain biking, I'm clumsy and nervous (boarderline scared). Just depends upon personal sensitivity I suppose.

 

[theALPHAone]

also:

caffeine works by blocking the uptake of a natural sedative your body produces it actually is not a direct CNS stimilant like many think

it just blocks away the "sleepy" messenger in our body

however a theshhold comes where no matter how much you have you just crash soon after

 

[Lumberg]

also:

caffeine works by blocking the uptake of a natural sedative your body produces it actually is not a direct CNS stimilant like many think

if it blocks uptake of this sedative, then there's more of this sedative floating around....not sure if I'm getting this.

for examples SSRIs block the re-uptake of serotonin, thus increasing serotonin levels in the brain, which makes patients happier.

 

[Animal]

Ok, we're waiting on the increase in insulin and now it blocks a sedative?

I don't know, I always thought caffeine was a direct stimulant of the sympathetic nervous system? So now it's not 'direct' but works because of lack of a sedative which is being blocked?

Also, how is that sedative getting from the brain into systemic circulation as all too many know that if you drink too much caffeine you can get those muscle twitches which are initiated at the muscle and not at the brain.

 

[faller]

Caffiene prevents adenine (sp) from fitting into its receptor. Both are purines, but caffiene is methlyated. SO, it fits into the receptor, but doesn't do anything, while the adenine (the "sedative") can't fit into the receptor.