Tracking nutrient levels and other substances in blood

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First you'd need to find experts who agreed on what was important and made a difference.. I wouldn't be surprised if most conventionally trained experts said all you need is a balanced diet - Athletes don't need anything special.

Yep you're totally right. As it happens a certain member on Sugden turned out to be quite the expert so that was pretty awesome! .

We are pretty keen to find some coaches, of any sport, to speak to. So if anyone knows any that might be interested please let me know!

found this reference on wikipedia regarding non-invasive glucose testing.
http://www.mendosa.com/The%20Pursuit%20of%20Noninvsive%20Gluco...

pretty interesting read if you've got an hour to spare (or work in IT and are waiting for 's**t to compile' )