Baby poor muscle tone

A baby's or any human's muscle tone (tonus) is the balance of tension and relaxation of muscles required primarily to sit up or stand. Not how nice a baby or person's muscles appear or how strong they are, as the misnomer from the fitness industry describes. Babies first of all need enough muscle tone for their respiratory system to start breathing. Some babies have slow overall muscle tone development and take an unusually long time to stand or walk.