I really do worry about baby muscle definition and if they look “ripped”. I would hate to have another baby kick sand in my baby’s face. Well worry no more! This is your book. (Humorless person alert: I am being sarcastic) Actually it isn’t too bad, just dated and from the ideas presented it sounds like more work than necessary. First, you need to build/make the gym equipment and then structure some time. Great, if you have the time and energy after having a newborn. Most parents I know were totally exhausted and were hardly in a position to have structured gym time with the baby. In the dark ages, when I had my babies, it was put them down on a blanket and let them kick around. Done.
Anyway, baby stuff seems to change every few years. Are newborns supposed to sleep on the back, side or on the stomach? Swaddle or no swaddle? I can’t remember, but I do know that the wrong choice is possibly life threatening. New parents, feel free to educate me here. My mother and I talked many times on how the “correct” method for a baby to sleep seems to change over time. As a library I think a 1970’s era book on baby care needs to be updated. Infant massage or exercise is a good topic for a public library collection too. Currency in baby information counts and I would treat it like health information and use 5 years as a rule of thumb.