https://www.youtube.com/watch?v=kwtpSa9iK7I
Jake Gyllenhaal's transformation from Lou Bloom in Nightcrawler to Billy 'The Great' Hope in upcoming boxing epic Southpaw saw the actor initially lose 30 pounds, before putting 15 of them back on in pure muscle.
Gyllenhaal's routine entailed 2,000 sit-ups per day and full boxing training twice daily - for a total of six hours every day, seven days a week - with director Antoine Fuqua, who warned Gyllenhaal that he 'couldn't fake it.'
Finally, some closure on my potential film career.
This is insane.