Definitely you have heard it on televisions newspapers documentaries and so on, “modern medicine have expend your life expectancy to an average of 72 years” and to make it sounds more persuasive, a comparison
What is energy?
From basic chemistry
Matters is anything that occupies space and has a mass, with some exceptions it can be seen, smelled, and felt. Solid like bones, liquid like plasma, gas like air.
Energy is less tangible has no mass and does not take up space, it can only be measured by its effect on matter.
Energy is defined as