Jake Gyllenhaal Describes His Training for “Southpaw“

Jake Gyllenhaal tells Howard Stern how much he had to train to get into shape for his boxing movie “Southpaw.“ Stream the FULL interview now on SiriusXM: Want to know what’s going on with Howard Stern in the future? Follow us Twitter: Also join us on Facebook: For more great content from the Howard Stern Show visit our official website: