Listen to the body

When training gets intense my body starts to get really specific about things.

Dad,
Ask Dr. Jonathan what it means if I'm craving raisins like mad.
I need antioxidants? Tryptophan? Potassium?

Mom,
"I feel really smart now" was said without sarcasm. The meaning: I feel really smart now.
I took chemistry and understood it. And I wanted to take it. Why be a wimp and go for a softie lab class?