According to Forbes.com its
Squash
http://www.forbes.com/2003/09/30/cx_ns_1001featslide_2.html?thisSpeed=6000
yes
jjb
yes they have Olympics game in volleyball
The do
An amateur practices the sport until they gets it right, a professional practices it until they never get it wrong.
the healthiest
The healthiest vitamin, is according to what you need. For example, if you don't have very strong bones, than it is best for you yo take Vitamin D. But remember, too much vitamins are not good!
This most popular sport would be Football, played by thousands as professionals and a kick about in the park.
You can't say "Most Healthiest." Either say "Most Healthy" or "Healthiest."
The healthiest thing for you is pure water.
Swimming is probably the healthiest sport to do because it gives you a full body workout. Also, being able to swim means that you will not drown if you fall out of a boat.
oat nut bread is the healthiest bread.