The DNA molecule contains a lot of chemical structures that tell the ribosomes how to create new proteins (that have a lot of functions).
Plus, you can benefit from fat burning even after your run as your body keeps burning fat for 2 to 3 hours after finishing a run. If you want to shed a few pounds, make sure you only ingest liquids and maybe a little protein during that time frame. Training on an empty stomach.
1 For at least two hours before running, don't eat anything at all.  Before, during and after running, drink plenty of fluids. Dehydration can lead to diarrhea. Avoid warm liquids, however, which can speed food through the digestive tract.