I've got a lot to do.

I have finished arranging one chapter of biology notes. I am knee-deep in the second chapter (and I can't tell if I am getting deeper or shallower).

I need to get some of the easier things off of my to-do list.

Tomorrow is the first Spanish class in a while, since December.  It will be nice to see the teacher and my classmates again.

Unusual thought.

A correlation has been observed with length of breastfeeding (for the child) and earliness of staying dry through the night (night-time potty training). Staying dry through the night is controlled by the levels of anti-diuretic hormone (which decreases urine production); apparently the levels of ADH rise in response to some sleep hormone (there are three to choose from). Breast-feeding (in the mother) is controlled by oxytocin.

Oxytocin and ADH are produced in the same endocrine gland (the posterior pituitary). Hmmmmm. If oxytocin is released into the milk, survives the stomach, and binds some receptor in the child's bloodstream, it could have a feedback effect on the posterior pituitary of the child, somehow leading to early production of ADH in response to sleep hormones.

Oxytocin is a protein (as are many of the beneficial components of breastmilk) and would *usuallly* be expected to be digested by the stomach without any effect. It is known that babies younger than six months have a lower level of acid in their stomachs and don't completely digest protein. But after 6 months, the levels of acid are not different than an adult's levels. (Now, all adults don't have the same levels of acid and neither do all babies older than 6 months, but the average for many individuals is the same).