If you're the type who spends most of your time sitting, whether it is a
sailboat, car, aeroplane or computer monitor you may experience more
fractures and breaks than those who maintain an active lifestyle. That's
because such sedentary activities do not increase bone density.

http://www.unm.edu/~lkravitz/Article...rcisebone.html

It is truly lamentable that we can add bone density problems to the long
list of things such as cardiac atrophy, impaired tidal volume, constipation,
arthritis, autoimmune disease, mental dullness, diabetes, lugged gut and
other inflictions of the inactive exercise adverse. Vigorous exercise can be
viewed as a type of insurance policy, here's just one example:

http://www.runningplanet.com/trainin...ve-longer.html

We've always heard that a material object can be replaced but your wellness
can't be. Wellness is not purchased, it is a matter of lifestyle choice and
commitment. It's not a distraction, is not fun but rather long lasting
contentment apparently appreciated by few and enjoyed by even less.

In old age people spend so much on their health. Smaller investments earlier
in life would have yielded much higher returns.