1 . A new study has found that braving the cold maybe a good way to help burn off some fat.
The research was carried out by scientists at Canada’s Laurentian University and focused on high-intensity interval training(HIIT). This format has grown in popularity of late due to the fat-burning benefits it brings, and the team set out to explore how temperature might influence its effects.
The study involved 11 overweight adults who took part in two HIIT sessions a week apart. One of these was carried out in a “thermoneutral” environment with temperatures of around 70 °F(21℃),and the other at a cold 32 °F(0℃). The sessions consisted of 10 separate cycling race at 90 percent effort lasting one minute, followed by 90-second “recovery” periods of cycling at30 percent intensity.
After each session, the participants cooled down by gently cycling or walking, ate a nutrition bar before going to sleep and enjoyed a high-fat breakfast the morning after. During these sessions, the scientists monitored skin temperature, core body temperature, heart rate and the amount of oxygen. Blood samples were also drawn to help calculate fat burning rates following the breakfast the next day.
“The present study found that high-intensity exercise in the cold increased lipid oxidation (脂质氧化) by 358 percent in comparison to high-intensity exercise in a thermoneutral environment,”the team writes.
The authors also note that the idea that cold temperatures help us burn more fat during exercise will need further investigation (调查), though the first-of-a-kind study does indicate it’s a possibility worth pursuing.
1. What is good for burning off fat according to the study?| A．Cold food. | B．Low temperature. |
| C．Hard workout. | D．Cycling race. |
| A．Introduction to the study. |
| B．Some data in the study. |
| C．The participants in the study. |
| D．The process of the study. |
| A．Further study needs to be done. |
| B．Doing exercise burns more fat. |
| C．The efforts of scientists are in vain. |
| D．The study result is unreasonable. |
| A．High-intensity Workouts Help Burn off Extra Calories |
| B．Cycling in the Cold Is a Great Way to Build upYour Body |
| C．Study Shows Fat-burning Potential of Exercising in the Cold |
| D．Researchers Have Found More Fat-burning Workouts |
2 . Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.
Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport’s rules require that a race walker’s knees stay straight through most of the leg swing and one foot remain in contact (接触) with the ground at all times. It’s this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.
Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.
However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.
As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon among race walkers. But the sport’s strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.
1. Why are race walkers conditioned athletes?| A．They must run long distances. |
| B．They are qualified for the marathon. |
| C．They have to follow special rules. |
| D．They are good at swinging their legs. |
| A．It’s more popular at the Olympics. |
| B．It’s less challenging physically. |
| C．It’s more effective in body building. |
| D．It’s less likely to cause knee injuries. |
| A．Getting experts’ opinions. |
| B．Having a medical checkup. |
| C．Hiring an experienced coach. |
| D．Doing regular exercises. |
| A．Skeptical. | B．Objective. |
| C．Tolerant. | D．Conservative. |
3 . For some people, walking or running outdoors is a great way to exercise. What may not be so great is seeing rubbish all over the ground. Well, some people are doing something about it.
A Swedish man named Erik Ahlström, started the movement in 2016. He moved to Stockholm from a small community (社区) in northern Sweden. Each day he would ride his bike to work. He became worried about the amount of rubbish and litter he saw each day on his way to work. So, he took matters into his own hands. He began picking up the rubbish.
Today, plogging is an official activity, which is becoming more and more popular. People of all ages are welcome to plog. Exercise while helping your community.
Along with cleaning up the environment, there may be another reason to choose plogging instead of just jogging. You may get a better workout. One fitness app, Lifesum, records one hour of plogging as burning 288 calories.
As can be seen, cities around the world now hold plogging events. The goal is to spread the idea that littering is not acceptable. People would think twice before dropping a garbage on the ground.
| A．Plogging is equal parts of exercise and community service. |
| B．And that is how plogging was born! |
| C．And plogging does good to your health. |
| D．Usual jogging burns about 235 calories. |
| E．They are plogging! |
| F．There are people all around the world doing this. |
| G．You get to know your neighbors. |
