Leasing “practice babies” occurred as recently as the 1960s. | Timeline

In the 1960s, many parents were encouraged to help their babies “exercise” - a practice shaped by early theories of physical development and a deep trust in modern science. Pediatric books and TV programs promoted guided stretching, limb movements, and the use of baby gyms, jumpers, and harnesses designed to build strength and coordination as early as possible. At the time, these routines were framed as progressive and health-focused, not harmful. Babies were often supervised while bouncing or s