The sad fact of the sedentary lifestyle

It just so happened that the work of the programmer - it's only a sedentary type of work. In tangible extent this also applies to sysadmin.
But if anyone thinks that in his younger years, than it threatens what dangers and heralds in the near future? People look back as a guide for the generation of their parents and relatives, youth and youth who have been in very different conditions. But the current office plankton (which you can safely reckon most IT-person) holds on the fifth point in an office chair for 8-10 hours a day, and it is quite another to expect the future in terms of health ...