Hooverball is a medicine ball game invented by President Herbert Hoover’s personal physician to help keep then-President Hoover fit.  In general, the game is played on a volleyball-type court of grass or sand and involves throwing a heavily weighted medicine ball over the net.  Officially, in Hooverball, the medicine ball weighs about 6 lb (2.7 kg) and is thrown over an 8 ft (2.4 m) volleyball-type net.  The game is…