“People with bone wasting conditions could do with a good shaking, according to US scientists. They found that sheep that spent time standing on a vibrating plate developed much stronger bones than those that did not.” New Scientist Addendum: Rebecca writes to remind me of a related story to which she linked a few months ago. “Wounded cats – wild and domestic – purr

because it helps their bones and organs to heal

and grow stronger, say researchers who have

analysed the purring of different feline species.

This, they say, explains why cats survive falls

from high buildings and why they are said to

have ‘nine lives’. Exposure to similar sound

frequencies is known to improve bone density in

humans.” Telegraph UK [If you have osteoporosis, sleep with your cat.]