The bottom line is that your
body turns food into energy — and if you have no food in your body then you won't be able to work out to your full potential.
That isn't to say we don't need small amounts of vitamins to survive — without vitamins like A, C, and E, for example, we have a hard
time turning food into energy and can develop conditions like rickets or scurvy.
1 Viruses are not alive: They do not have cells, they can
not turn food into energy, and without a host they are just inert packets of chemicals.
Proteins are the molecules that make life happen: they are the powerplants that
turn food into energy, the machines that make cells move, and even the computers that read DNA and make more proteins.
They're all coenzymes needed to
turn food into energy, ensure healthy skin, keep the nervous system working and to create red blood cells.
All the B vitamins support the body's metabolism, helping to
turn food into energy that can be used by the body's cells.
Your metabolism includes all the things your body does to
turn food into energy and keep you going.
Protein forms enzymes that
turn food into energy, and it also helps create hormones that are responsible for certain bodily functions.