They are primarily responsible for maintaining and changing posture, locomotion, as well as movement of internal organs, such as the contraction of the heart and the movement of food through the digestive system via peristalsis.
Internet Users in the U.S.A. (2016*) 1  Share of U.S. Population: 88.5 % (penetration) 2  Total Population : 324,118,787. 3  Share of World Internet Users: 8.4 4  %. Internet Users in the World: 3,424,971,237.
That number represents nearly 14 percent of the total time in a week. All that time is taking a toll on users, a new eMarketer report found. However, 54 percent of survey respondents said they have tried to decrease their reliance on technology in the past year in favor of more in-person contact.