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Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

Exercising for just 10 minutes a week is linked to a longer life, according to a new study published in The British Journal of Sports Medicine. Several recent studies have found that even low-intensity exercise, done for a short amount of time, can have a meaningful ___ on health. Still, the idea that exercising for just 10 minutes a week may be enough to increase your lifespan is novel. It’s also somewhat ___, since the federal physical activity guidelines recommend getting at least 75 minutes of vigorous exercise or 150 minutes of ___ exercise each week. The study was based on data from more than 88,000 U.S. adults who ___ in the National Health Interview Survey between 1997 and 2008. Contrary to some research that has found an ___ limit to the amount of exercise that is healthy, the researchers found that there was ___ no limit to the longevity (长寿) benefits of exercise. Even the small group of people who got 10 times the amount of exercise recommended by the federal government had a 46% lower ___ of death than the least active group. Still, observational studies like this one cannot prove cause and effect; they can only find ___. The researchers also were not able to ___ for certain lifestyle factors that could affect lifespan, including dietary habits and changes in physical activity over time. Despite these ___ , the study’s results are yet another indication of the power of physical activity, even in small amounts.【仅支持A-H选项，选项超出支持范围】

What is a reason for the author to be in the habit of saying “busy” when asked how he is doing?

Why do we tend to think that busy people are of high status?

What do we learn about the culture of busyness from a recent study?

What do such utterances as “I have limited access to email” sound like according to the author?

Why did the author and his colleagues launch the Out of Office Email Generator?

What did the author’s team conclude about the gender difference in airfares from their further investigation?

What did the researchers want to determine by testing a variety of possible explanations?

What happened when the negative reciprocity variable was taken into account?

What did prior research on negative reciprocity among workers find?

What does the author emphasize about their analysis in the last paragraph?

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