Sophie, Bath UK. The blood volume of most mammals is approximately 7 to 9% of ideal bodyweight. If your 7ft giant weighed 100kg (15St 10lb), they would have a blood volume of 7 to 9 liters (12.3 to 15.85 British Pints) and a 5ft person weighing half that (50kg) would have a blood volume of 6 to 8 pints.
Biography. Jeff Gadley competed in swimming, football, and track at Buffalo's Kensington High. In track he also competed in the decathlon in college at Plattsburgh State. Gadley competed in bobsledding for only two full years, at the 1980 Winter Olympics, and on the US team at the 1979 World Championships. He earned his degree in nursing from Plattsburgh State.
Having made a promising start in the sport, Jeff, 52, popped his right arm during a contest in 1986, causing him to stop competing. Massive: Jeff Dabe's monster forearms measure 19 inches (49cm) in circumference and he is capable of holding a basketball in each hand. Spot the difference: Jeff was given the nickname Popeye after the spinach-eating sailor, pictured, with big muscles.