Hi Adam:

It sounds to me like maybe you should have a physical done at your doctor's office to make sure you are healthy before starting your exercise program. Your symptoms sound like a stress reaction and could be caused from a number of things, but best to be safe.

From what you say, it sounds like you had bioelectrical impedence done after drinking water and exercising. Is that correct? It's my understanding that these factors can affect the accuracy of the reading. Probably a caliper test would have been better for you or at least taking the bioelectrical impendence test under better conditions.

Lastly, you may find that your current level of carbs may be too low for doing exercise. It's something you may want to gauge if you feel weak working out.

Good luck on your new program.

Wanda