Gunnar Peterson on training the world's best athletes

"It’s fun to be a part of it if you’re a part of the team when they break through or when they change something and you see the benefit right away."  A new year means New Year's resolutions and there's arguably no one more in demand this time of the year than a fitness trainer. This week brings in strength coach Gunnar Peterson to talk all things fitness, health and nutrition, with a touch of celebrity status mixed in. Though he loathes being dubbed a "celebrity trainer", he has worked with plenty of big names including Pete Sampras, Matthew McConaughey, Sylvester Stallone, Dwayne Johnson, Hugh Jackman and the Kardashians (he's even appeared on "Revenge Body with Kloe Kardashian"). Peterson is also currently the head of strength training for the Lakers. He'll surprise you with his take on who actually works out the hardest as he shares tales from his Beverly Hills gym, talks about the power of motivation and the importance of supplements, and explains what was so special about working with Sampras. Watch TENNIS.com Podcast episodes on YouTube and Facebook. Learn more about your ad choices. Visit megaphone.fm/adchoices