After these «fight or flight» chemicals make their way into the body, there's increased demand to break down fat
cells for use as energy.
After you eat carbs, your body breaks them down into glucose monomers
for use as an energy source or stores them as glycogen (in the liver or muscle tissue) for future use.
Where glucose can be dispersed throughout the
body for use as energy, fructose is targeted like a guided missile to the liver.
Catabolic hormones, including glucagon, epinephrine, norepinephrine, and cortisol, are involved in breaking down nutrients
primarily for use as energy.
The pancreas is responsible for secreting enzymes to help dogs digest their food and break down
sugar for use as energy.
Caffeine itself has also been shown to improve physical performance by mobilizing fatty acids from the fat tissues and making them
available for use as energy (17, 18).