Stars' Secret Trainers: Their DogsForget pricey workout plans – celebs like Matthew McConaughey and Amanda Seyfried burn calories with the help of their furry BFFs!

  • MATTHEW MCCONAUGHEY photo | Matthew McConaughey

Credit: Flynet

Updated: Monday Jan 02, 2012 | 06:00 AM EST By: Helin Jung

MATTHEW MCCONAUGHEY

Just keep livin' – and runnin'! The newly engaged star and his loyal dog BJ manage to stay adorable even while breaking a sweat.