Is Counting Calories Good for Weight Loss?
Mark Haub, who teaches nutrition as Kansas State University, wanted to prove to his students that weight loss is simply about calories. Therefore, for ten weeks, the professor started to eat an 1,800-calorie diet
When he started, Haub tipped the scale at 201 pounds,
Haub’s message has been standard advice for more than a century. According to many experts, it all comes down to straightforward math:
One reason is that calorie counts are not always accurate. The Food and Drug Administration allows numbers on nutrition labels
Listed calories may also be wrong
So, counting calories
7 . Hanwengong Shrine
Now we come to Hanwengong Shrine, which is beside Hangjiang river and west of Bijia mountain.
In the year of A.D. 819, for some political reason, Han Yu was exiled (流放) to Chaozhou, a backland at that time. But he was not depressed by this, and he helped local people to develop education, agriculture, irrigation and release slaves.
The shrine was built against the mountain and divided into two parts, the front part and the back part. Now we play a small game: count the stone steps, and later I’ll tell you a secret. How many steps are there? Yes, 51 steps! Why?
A.When Han Yu came to Chaozhou, he was 51 years old. |
B.Han Yu was a Confucian figure, and there are many stories about him in Chaozhou. |
C.Although Han Yu’s ideas had no obvious practical effect at the time, they had a great impact on society decades later. |
D.Built in the Song dynasty, the shrine is the oldest and best preserved monument to Han Yu, one of the greatest literary men in the Tang dynasty. |
E.To memorize what he had contributed to the development of Chaozhou, people constructed this shrine and named him Hanwengong respectfully. |
F.There are so many tourists that, to relieve the pressure on the monuments, the scenic spot requires that a maximum of 500 people visit at a time. |
A.At Mary Johnson’s. | B.At a painter’s studio. |
C.In an exhibition hall. | D.Outside an art gallery. |
How to Stay on Task
“In many activities, it is difficult to maintain a high level of focus over time. Our research asks why this is the case,” said Matthew K. Robison, assistant professor of psychology at the University of Texas at Arlington. Although humans generally perform fine in situations that require sustained attention, they are often distracted, which can lead to inattention. Common distractions can be anything from thinking about a new romantic interest to reacting to a car honking. Most inattention has minor consequences like forgetting to forward an email or pick up an item at the grocery store. However, other inattention can lead to serious consequences, such as a train operator not reacting to an incident, a surgeon forgetting a step in an operation or an individual forgetting to turn off an oven.
“Sustaining attention can be easier said than done, as attention fluctuates(波动) across short and long intervals,” Robison said. One of the most common approaches to studying inattention has been to examine response time to a variety of tasks. For this study, Robison and colleagues employed more than 100 participants to complete reaction time tasks for about 25 minutes. In a standard control condition, participants were simply told to respond as quickly as possible on each trial. “In this condition, reaction times systematically increased across time, consistent with the idea that task focus was decreasing,” Robison said. “However, when we gave them specific goals to pursue and made those goals harder over time, they did not show that effect.”
The drop in concentration goes some way to explaining why we remember or forget the moment and why some people remember better than others. Robison and colleagues at the University of Oregon have also published a new study on maintaining attention. The results provide evidence that a simple and easily implementable change in behavior — setting specific goals for oneself — can significantly improve our ability to maintain task focus over time. “Setting a specific goal will increase sustained attention and reduce inattention,” said Robison based on his studies.
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