Think about it, while in your stomach, the baby's «bed» was in constant movement, rocking him gently back to sleep. (easybabylife.com)
With constant movement from one place to another, children have difficulty developing new friendships, establishing themselves academically, and adequately adjusting to their environment. (myplaytherapypage.com)
With smaller maps comes the need for constant movement. (justpushstart.com)