Every since human find out the existence of gene, the common knowledge about it is that, we cannot change it once inherited. However, scientists have significant shown that intense exercise can immediate alter DNA as change the regulation of gene can led to increase in enzymes that burn fat and sugar to support the body. Exercise not only strength our muscle but also transform the gene into more energy productivity way.
Scientists taken some muscle samples from healthy volunteers before and after the exercise and they found the patterns of methylation have changed, the methylation is the processtion of addition of methyl group and use to control gene expression and occurs when chemical attach to DNA. In contract, demethylation is the chemical processing of removal of methyl group. Methylation and demethylation both play an important role for regulate the gene transcription which is used to turn on and turn off or at least slow down the gene production at exact time and position on DNA.
 Mahmoud Z,2012, Intense exercise can alter your DNA, Bio News, viewed 14 March 2012.http://www.bionews.org.uk/page_132849.asp