The most dangerous drug in the world: 'Devil's Breath' chemical from Colombia can block free will, wipe memory and even kill. 1  Scopolamine often blown into faces of victims or added to drinks.
To summarize, it appears the best position is left side, followed by right side. After 16 weeks it's best not to sleep on your back, and you probably won't sleep on your stomach. (One way to avoid sleeping on your back is to sew a tennis ball into the back of your pajamas; this works for people who snore, too).
As your baby gets used to tummy time, place your baby on his or her stomach more frequently or for longer periods of time. For a 3- to 4-month-old baby, some research suggests aiming for at least 20 minutes of tummy time a day. Remember, however, to never leave your baby unattended during tummy time. If your baby becomes fussy or sleepy during tummy time, change his or her activity or place your baby to sleep on his or her back in the crib. With. Jay L. Hoecker, M.D. 1  Starting solids. 2  Vitamin D for babies.