"The 5 quarts of blood an adult male continually pumps (4 quarts for women) flow at an average speed of 3 to 4 mph — walking speed. That's fast enough so that a drug injected into an arm reaches the brain in only a few seconds.Jun 3, 2014" btw the best way to get food is via aquaculture or fishing followed by raising livestock see marine permaculture, joel salatin, and mark shepard for more info