David Beckham
The sportsman has kept in tip-top shape during his career and after by declining both alcohol and drugs. Beckham has always been a high profile celebrity on account of his own soccer career, brands and marriage to Spice Girl Victoria Beckham. A true legend.
James Franco
Having struggled with depression in his youth, Franco turned to drugs and alcohol as a coping mechanism. Since he turned 29, Franco has been completely sober and chooses to avoid mind-altering substances to ensure that he can function at optimal capacity.