A paper in Archives of Disease in Children documents a New Zealand experiment in which children's sleep habits were tracked against their activity, as measured by an actigraph. The conclusion won't surprise many parents: kids who run around all day sleep more at night (and kids who sleep more at night are more apt to run around all day).
The study included 519 healthy 7-year-olds from New Zealand, who each wore a device called an actigraph for 24 hours. An actigraph records movement, providing an objective measure of a child's activity level and sleep time. Parents also noted when their child went to bed, which allowed researchers to calculate how long after bedtime children actually fell asleep.
Active days mean better bedtimes
The researchers found a wide variation in how quickly children fell asleep, with some taking as little as 13 minutes and others needing more than 40 minutes after going to bed. Within this range, there was a close relationship between the onset of sleep and daytime activity. On average, children took an extra three minutes to fall asleep for every hour they weren't moving about. Also, the children who fell asleep faster slept longer overall. On average, children got one extra hour of slumber for every 11-minute drop in how long they took to get to sleep.
Frog tongue mechanism has been well-documented, but only recently have scientists started looking at the remarkable combo of tongue softness and frog spit’s chemical makeup.
Elenco’s Night ‘n Day Mechanical Globe uses a system of translucent, exposed gears to rotate an internally illuminated globe that displays the seasonally adjusted, real-time night/day terminator as it spins.
KSU plant biochemical geneticist Raj Nagarajan describes the properties of Thaumatin, Monellin and Brazzein, all found in west African plants that are generally considered safe for consumption; each is a protein, and they are, respectively, 1,000x, 2000x, and 3000x sweeter than sugar.
Although there will never be a consensus about the best way to make coffee, any coffee connoisseur will agree that controlling the grind of your beans and balancing water temperature are the keys to a tasty cup. Since your plastic coffee pot doesn’t really allow for that kind of customization, going back to the French […]
Not all hackers are malicious information thieves—white-hat ethical hackers work with technology companies to ensure the security of their computer systems and user data. With all of today’s high-profile data breaches, ethical hackers are in considerable demand. To learn these critical skills and break into the high-paying cyber security field, try taking the courses in this […]
Making people aware of goods and services in the digital age requires an array of new strategies from social media and email to number-crunching tools like Google Analytics. To get a handle on the techniques used to capture attention and convert traffic into dollars in a crowded online environment, the Full-Stack Marketer Bundle offers 22 hours of training to get […]