If your baby really doesn't like being on her tummy, leave it for now and try again another time. Bear in mind that babies develop differently, some more quickly than others. If your baby isn't rolling over by the time she is six months or seven months old, talk to your GP or health visitor.
Some men stop growing at 18, some at 21. Some men grow really quickly early on, and slowly grow taller until they have hit somewhere between 18 and 21, while others grow quickly later on and some just grow gradually. So, only time can tell you, no one else can because everyone is different.
Full Answer. Boys hit their growth spurt at about age 11, and they can grow up to 4 inches a year for two years. Most of a boy's growth takes place between ages 12 and 15. Boys experience other physical changes during puberty, including the development of facial, pubic and underarm hair.