Sprinting abilities are genetic

http://www.theguardian.com/commentisfree/2014/jul/21/jamaicans-sprinting-athletics-commonwealth-games

How ever you can go father than your genomics

http://mobile.nytimes.com/blogs/well/2015/03/04/one-twin-exercises-the-other-doesnt/?WT.mc_id=2015-Q1-KWP-AUD_DEV-0101-0331&WT.mc_ev=click&bicmp=AD&bicmlukp=WT.mc_id&bicmst=1420088400&bicmet=1451624400&ad-keywords=AUDDEVMAR&kwp_0=11353&kwp_4=81148&kwp_1=126775&_r=1&referrer=