sedentary是什么意思？

But on the subject of obesity, she pointed out that consumers' lifestyles have changed significantly, with many people being more sedentary (久坐不动的) not least because more time is spent in front of computers.

We can't do much to alter sedentary lifestyles, but we can provide consumers with great-tasting products, low in salt, sugar and fat.

But a new study finds that there's another group of adolescents who are in nearly as much danger of experiencing the same psychiatric symptoms: teens who use tons of media, don't get enough sleep and have a sedentary ( ' , 不爱活动的 ) lifestyle.