Abiasali Nsereko, who's a 68-year-old farmer in Luweero, Uganda told the BBC he wakes up at 5 a.m. every day to milk his cows.
"I spend about eight hours on my feet, six days a week," he said. "I grow all the food that we eat."
The same is no longer true in other places around the globe.
"In wealthier countries, the transition towards more sedentary occupations and personal motorized transportation probably explains the higher levels of inactivity," the WHO report says. "In lower-income countries, more activity is undertaken at work and for transport; however, these behaviours are changing rapidly."
The report authors urge everyone to walk more, bike, and play sports for fun during their free time, no matter where they live.