Search results
Results from the WOW.Com Content Network
Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...
The water-holding frog has an aestivation cycle. It buries itself in sandy ground in a secreted, water-tight mucus cocoon during periods of hot, dry weather. Australian Aboriginals discovered a means to take advantage of this by digging up one of these frogs and squeezing it, causing the frog to empty its bladder. This dilute urine—up to half ...
Yawning (oscitation) most often occurs in adults immediately before and after sleep, during tedious activities and as a result of its contagious quality. [8] It is commonly associated with tiredness, stress, sleepiness, boredom, or even hunger. In humans, yawning is often triggered by the perception that others are yawning (for example, seeing ...
For premium support please call: 800-290-4726 more ways to reach us
Merely thinking about or seeing someone yawning can make you yawn. But why?
The kiwi is a family of nocturnal birds endemic to New Zealand.. While it is difficult to say which came first, nocturnality or diurnality, a hypothesis in evolutionary biology, the nocturnal bottleneck theory, postulates that in the Mesozoic, many ancestors of modern-day mammals evolved nocturnal characteristics in order to avoid contact with the numerous diurnal predators. [3]
Why do I yawn when I’m bored? Karen D. Sullivan, Ph.D., board-certified neuropsychologist and creator of I Care For Your Brain calls boredom-induced yawning the “biggest myth” associated ...
Why Do Leaves Change Color? Betsy Maestro Loretta Krupinski 1994 stage 2 Why Frogs Are Wet: Judy Hawes Don Madden 1968 2000 Stage 2 Why I Sneeze, Shiver, Hiccup and Yawn: Melvin Berger: Paul Meisel: 1983, 2000: An introduction to the reflex acts that explain why we sneeze, shiver, hiccup and yawn. Wild and Woolly Mammoths: Aliki: 1998