Energy is a physical quantity measured in four dimensions, which has many forms. For example, thermal energy, mechanical energy, chemical energy, etc.
When you lose weight, try to eat less carbohydrates, but you must have energy supplements, otherwise your body will not be able to bear the energy consumption caused by daily activities.
Carbohydrate is composed of three elements: carbon, hydrogen and oxygen. Because the ratio of hydrogen to oxygen is two to one, it is the same as water, so it is called carbohydrate. It is the cheapest of the three main nutrients that provide heat energy for human body. Carbohydrates in food can be divided into two categories: effective carbohydrates that people can absorb and utilize, such as monosaccharides, disaccharides, polysaccharides and ineffective carbohydrates that people can't digest, such as cellulose, which are essential substances for human body.
Energy is a measure of the possible changes in the temporal and spatial distribution of matter, which is used to characterize the ability of physical systems to do work. Modern physics has defined the quantitative relationship between mass and energy, that is, Einstein's mass-energy relationship: E=MC? .
Energy exists in many different forms; According to the different movement forms of matter, energy can be divided into mechanical energy, chemical energy, thermal energy, electric energy, radiant energy, nuclear energy, light energy, tidal energy and so on. These different forms of energy can be transformed into each other through physical effects or chemical reactions. Various fields also have energy.
The essence of energy is a physical quantity measured in a four-dimensional space in a physical sense, and there are also physical quantities measured in a three-dimensional space-momentum, and physical quantities measured in a two-dimensional space-mass and so on. They are all the material properties of matter in different dimensions. See the material "Four-dimensional Space and Energy Essence" for details.
References:
Carbohydrate _ Baidu Encyclopedia
Energy (physics term) _ Baidu Encyclopedia