spring fever & summer rental mary kay andrews

It monitors light through a pathway to the retina and conveys information about day length to the pineal gland. The biological clock, called the suprachiasmatic nucleus (SCN), sits in mammals' hypothalamus. It is well documented that animals and humans track seasons by measuring the length of days through an internal biological clock, and this is what controls their breeding. The same trend was also seen in hares and deer, according to Mammalian Reproductive Biology by biologist Frank Bronson of the University of Texas.

In fact, researchers discovered that birth spikes in field mice are more significant the farther the mice are from the equator, as seasons become more pronounced. Of course, spring doesn't just lighten our mood as Alfred Lord Tennyson described, 'In the spring a young man's fancy lightly turns to thoughts of love.' Studies show that sexual behavior in mammals follows a seasonal pattern, one that promotes survival. Such good moods decreased during the hotter summer months and there is an optimal temperature for them, Keller claims: 72 degrees Fahrenheit, otherwise known as room temperature.

and Canada and found that the more time people spent outside on a sunny spring day the better their mood. Matthew Keller, postdoctoral fellow at the Virginia Institute for Psychiatric and Behavioral Genetics in Richmond, studied 500 people in the U.S. Such spring fever remains a fuzzy medical category, but there has been a great deal of research on how seasonal changes affect our mood and behavior. 'But I would say it begins as a rapid and yet unpredictable fluctuating mood and energy state that contrasts with the relative low winter months that precede it.' 'Spring fever is not a definitive diagnostic category,' says Michael Terman, director of the Center for Light Treatment and Biological Rhythms at Columbia University Medical Center.

It's spring fever, that wonderfully amorphous disease we all recognize come April and May. Its symptoms include a flushed face, increased heart rate, appetite loss, restlessness and daydreaming. There's an illness that has been documented by poets for centuries.

Spring fever & summer rental mary kay andrews