骨质疏松的预防和饮食

为什么每天喝牛奶还会得骨质疏松？造成骨质疏松的原因不仅是钙的摄入量不足导致的缺钙,维生素C、蛋白质和胶原蛋白的合成发生障碍导致的骨有机基质生成不良才是首发因素。     

Peak performing organisations

The literature on organisational performance is riddled with measurement problems that cannot easily be solved. In contrast we argue that elite theory in terms of performance can be more easily measured by the win record of sports organisations. Accordingly, this article argues that certain organisational peak practices are key to understanding how peak performance is sustained. Through data collected from the top ten sports organisations in the world we introduce the embryonic theory of Peak Performing Organisations (PPO). Sustained PPO practices offer more robust outcomes than the genre of High Performing Organisations.     

七招赶走夏打盹

常言道：＂春困秋乏夏打盹＂,现在推荐几个赶走困意的小招数,不妨试试。 拳头按压拳头握紧,放在耳朵斜后方,靠近颈部中央的头骨位置,闭上眼睛,头往后仰,感觉拳头支撑着头部的力量,能释放疲惫感。