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.
Bone density is greatest in your early 20s. But as you age, you can lose bone mass from a variety of factors. Osteoporosis or its early warning sign, osteopenia, signals an imbalance in the remodeling process: Too much bone is broken down, and too little new bone is built back up. Brittle bones result, prone to fracture.