I would note water, food and sleep.

Don't forget thoughts too :)

Emotions are a great gage. Like signals. When your emotions are out you know something is wrong. Likely either your thinking, food, water, sleep or movement (not enough or too much).

Remeber your whole body has receptor sites for the chemicals produced by thoughts and emotions. It will effect ALL of you.

To wirte right after training sounds very good to me. I would compare with what OI ate (drank, sleep stress levels of day etc) and how long before training I ate etc

You'll quickly see how long you need to leave after eating for training.

Writing it down is key and leads to some amazing discoveries. It shows us how things DO effect us.

Really its all about awareness. Without awareness you can't consciously change.

Not consciously trying to change will, for the most part, leave you the same.

Most people do the same thing over and over.

"To do the same thing and expect a different out come is a sign of insanity."

In sport and exercise I see... Going to my spin class and eating shitty. Better gop to more spin callses or ...people sit on the cardio machines daily for years (and talk about how good it makes them feel-read cortisol high which numbs pain-but don't get healthier or happier in their day ...or fatigue in a fight and go train harder-fatigue in a fight and go train harder-fatigue in the fight and go tain harder (never mind sick or injured all the time-must mean train harder.