Peptides make up proteins, which are considered to be one of the building blocks (macromolecules) of the human body. Proteins function as enzymes, hormones, structural units, and antibodies and in cellular respiration, muscle contraction, and more. Adjustment of peptides affects an individuals ability to gain muscle, for example. Peptides (a chain of less than 50 amino acids) are ultimately a product of DNA, though peptides can be injected into the body for personal reasons.
I don't know if there is really explaining them in a common language. However, your post was very informational and explained a lot to me. I know have a better understanding of what peptides are.
Peptides (from Gr. πεπτός, "digested", derived from πέσσειν, "to digest") are biologically occurring short chains of amino acid monomers linked by peptide (amide) bonds.
So, simply put, peptides are amino acids that are broken down by the body. However, remember that the term peptide has been incorrectly or unclearly used to mean illegal secretagogue and peptide hormones in sports doping matters.
Peptides are molecules that are very active and they send signals to the cells throughout the body. The peptides are made up of amino acids and they have the same structure as a protein. When I did research, it says that the peptides are small proteins and both have 15 to 25 percent of nitrogen and the same amount of oxygen.
I think that is a good description princess. What fascinates me the most is the level at they operate at and how they could work. Far better than many of the existing solutions.