As a result, the amount of glucose in the bloodstream rises, however the cells can not function due to a lack of usable fuel. (texaswestveterinarian.com)
When and if supplies of natural gas begin to run out, the oil companies will focus on squeezing usable fuels out of even more difficult prospects. (discovermagazine.com)
Also supplied in this modest - sized serving of beef are 2 milligrams of iron (athletes need extra to rebuild red blood cells broken down by taxing training sessions) and a boost of B vitamins which help convert carbs (like a nutrient - dense sweet potato) into usable fuel for exercise. (thefitfork.com)