Protein energizes muscles, primarily.
The preferred source of energy for the heart muscle is fatty acids. Fatty acids are "good fats" that are main sources of energy for cells.
fat
ATP is the source of chemical energy used to power a muscle cell in your arm.
glucose
ATP
yea it is
I believe this is Creatine....unless you are looking into something more specific.
Your muscle is made up of thousands of cells. Muscle cells have extra mitochondria, mitochondria power your muscles by burning glucose.
NADH (or NAD+) is used to produce ATP, the primary source of muscle energy.
When the body is being starved, it uses different means of finding energy sources within the body. When the body is extremely starved, it uses muscle mass as a last resort source of energy.
Muscle cells because mitochondria is a cells energy source and in order for an athlete to play their sport or do their activities, they need a lot of energy.
Glycogen is a short-term energy source after cellular glucose supplies are depleted. It is stored in the liver and the muscle tissue.