article_snippet.sent: The new Southpaw trailer last month featured Gyllenhaal showing off an extremely toned torso.
article_snippet.sent: But according to his trainer, former professional boxer Terry Claybon, it took a huge amount of work to get the 34-year-old actor ripped for the shoot, including six months of training before filming even started.
article_snippet.sent: Of course, Gyllenhaal had to work even harder to get in shape because Gyllenhaal had just  dropped approximately 30lbs to play freelance crime reporter Lou, who stumbles upon the dangerous underworld of Los Angeles in Nightcrawler.
article_snippet.sent: According to his trainer, it took a huge amount of work to get Gyllenhaal ripped for Southpaw, including six months of training before filming started, 2,000 sit ups and six hours of training each day .
article_snippet.sent: Much thinner: The 34-year-old lost 30 pounds for 2014 thriller Nightcrawler and had  to put that weight  back on plus 15lbs of muscle .
article_snippet.sent: Speaking about He weight loss for Nightcrawler, Jake told Us Weekly: 'I knew that [Lou] was literally and figuratively hungry,
article_snippet.sent: Bulking up: Jake poses here with Jake trainers, including former boxer Terry Claybon (second from right), who was responsible for whipping the once-scrawny actor into shape .
article_snippet.sent: The huge swing in Gyllenhaal's physique recalls other drastic changes actors have made in other drastic changes actors bodies.
article_snippet.sent: The real Jake Gyllenhaal: When not packing on muscle or dropping weight for a role, The real Jake Gyllenhaal looks like this (pictured in January)
highlights_snippet.sent: Gyllenhaal lost 30lbs for thriller Nightcrawler then gained it all back - and put on 15 more pounds of pure muscle in six months .
  