Not exactly sure this is right .Bonking, or “hitting the wall” as it is also known, is a well-known phenomena among marathon and ultramarathon runners which occurs when your body runs out of sugar to burn. Sugar, stored in your liver and muscles bound into large chains called glycogen, is the prime fuel for a distance runner.
DNA (Deoxyribonucleic acid) is the genetic material present inside the nucleus of all eukaryotic cells.
Samples as small as few skin cells also contain DNA and the presence of DNA in skin cells is often used to identify the DNA of a person in a crime scene.
Further, with the use of PCR technology, the small amount of DNA obtained from skin cells can be amplified into many copies.