Check-in for air travel differs depending on your starting destination, your final destination, the airline you are flying and your travel day and time.
Boys continue growing until age 17 or 18. Boys and girls grow about two inches per year until they reach puberty. Then they each have a growth spurt that lasts a year or two. During the growth spurts, boys grow a little faster than girls. Girls reach puberty (on average) about a year before boys do. Girls also end puberty earlier than boys.
studies show that the sperm that produce female offspring aka girl babies swim more slowly than the sperm that produce male offspring but they are also hardier br br this means that boy sperm swim fast but die faster and girl sperm swim more slowly but last longer the shettles method says that to increase your chances of having a girl have sex 3 days before you ovulate and to have a boy have sex the day before you ovulate