The question: A friend told me if I put my child in a Jolly Jumper-style exerciser, she will not develop her muscles properly. Is that true? The answer: I would never presume to tell anyone how to ...

Many parents think baby walkers and exercise jumpers can help their child develop quicker, but in fact they do the opposite, experts warn. Skip to main content ABC News ...

In 1967, Eaton's Spring and Summer catalogue advertised the Jolly Jumper as providing "fun and exercise for babies aged 3 mos. to walking." (Eaton's Spring and Summer catalogue, 1967) It was, in ...