Zar may refer to: 1  Zar, Armenia, a town in the Kotayk Province.  Zar, Azerbaijan, a village in the Kalbajar Rayon currently controlled by the Nagorno-Karabakh Republic.
If you're carrying more than one baby, chances are good you'll deliver early. Twins are usually born around 36 weeks -- four weeks early. Triplets arrive at about 33 weeks, and quads often make their debut at 31 weeks.
Weight gain is especially important between weeks 20 to 24 of pregnancy. If a mother of twins gains 24 pounds by the 24th week of pregnancy, she reduces her chance of preterm labor. Early weight gain is also vital for the development of the placenta, which aids in the passing of nutrients to the babies. Weight gain depends on a number of factors including height, body type, and pre-pregnancy weight. However, most women who are carrying twins are encouraged to gain 35 to 45 pounds.