That's according to a new report that studied the physical activity of more than 200 9- and 10-year-old girls and boys.
It found that on average the children spent 75 percent of their time being sedentary.
They had those children perform some basic motor coordination tests and found those children were more likely to have abnormal motor function than physically active kids.
Researchers say having abnormalities at such a young age could lead to poor motor function as they grow older.
