Not only it is one of the largest airports in the world but is also ranked among one of the busiest airports in the world. According to sources, Beijing Capital International Airport accounted 557,167 air craft landings and take offs, making it the busiest airport of the world in 2014.
Bone mass generally peaks around the age of 30-35, and then starts to slowly decline at around age 50 in women (60 in men) when you start to lose bone mass faster than your body can grow it back. This happens to all adults, however critical loss of bone mass (osteoporosis) is much more common in women.
The middle-age spread is a real struggle, with gradual lean muscle loss after the age of 30. But men and women tend to gain weight differently. According to the NIH, men usually gain weight until their mid-50s when their weight starts to drop off again -- often due to drops in testosterone, which sustains muscle. Women on the other hand typically gain weight for an extra decade, until 65, when they start to lose weight too, often due to muscle loss.