Entertainment Music Country The Reason Behind Blake Shelton's New Look: 'He's Taking Care of Himself,' Says Source "He's putting energy into his music and his health," says a Shelton friend By Melody Chiu Melody Chiu Instagram Twitter Melody Chiu is a Senior Editor for PEOPLE. She has been with the brand since 2009, editing, writing and reporting across all entertainment verticals. She oversees PEOPLE's music and events coverage and has written cover stories on Taylor Swift, Selena Gomez, Melissa McCarthy, Blake Shelton and Sandra Oh. The Los Angeles native graduated from the University of Southern California and has appeared on Extra!, The Talk, Access Hollywood and Good Morning America. People Editorial Guidelines Published on September 23, 2015 12:35 PM Share Tweet Pin Email Photo: WWD/REX Shutterstock When he stepped on stage at the iHeartRadio Music Festival in Las Vegas over the weekend, Blake Shelton looked more in shape than ever as he sang his hit songs. With a red Solo cup in hand (“When I get nervous, I tend to drink a little bit,” he told the crowd), The Voice coach played a 25-minute set and talked about his new music. So what’s behind his sudden slim down? “He’s working out and taking care of himself,” says a friend. “He worked out before, but now he has more time and he’s just in a really healthy place.” According to the pal, Shelton – who announced his divorce from Miranda Lambert in July – “really pushed himself before really hard in terms of his schedule so that he could spend with her.” Blake Shelton and Miranda Lambert Split: Inside Their Small-Town Life Now that he’s flying solo and is “no longer working his schedule around someone else,” the star – who’s releasing his next album Reloaded: 20 #1 Hits on Oct. 23 – has been hitting the gym. “He’s putting energy into his music and his health,” says the friend. “He looks fantastic.” PHOTOS: The iHeartRadio Music Festival as You’ve Never Seen It Before For more on Blake Shelton’s life now, pick up the latest issue of PEOPLE, on newsstands Friday.