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.
Most boys start puberty and begin their growth spurt between ages 13 and 15. Their growth spurt also lasts for a year or two and during this period they may gain as much as 4Â½ inches in height per year. By age 15, it is common for boys to become taller and heavier than girls. After the growth spurt, growth continues but slows down to a steadier rate. It is important to note that growth period can occur within a wide age range. Each individual may experience growth period earlier or later than the average age.