Closed Captioning ON OFF apply | reset x Text Display Background Enhancements font Times New Roman Arial Comic Sans size T T T T color share link October 10th, 2013 How to treat pain in your back, knees, head Sports medicine physician Jordan Metzl demonstrates how doing planks and jump squats and exercising with plyometrics can help back and knee pain. More video Sponsored Content Now Playing Sterilization Lapse Puts Kids At Risk Sponsored Content Now Playing New Invention Targets School Germs Sponsored Content Now Playing Oklahoma Daycare Accused of Drugging Babies Sponsored Content Now Playing FaceTime Hits The NICU! Men's Health Now Playing Concussions at the Center of Young Football Player's Retirement Now Playing To Look Younger, Men are Turning to 'Bro-Tox' Now Playing Shock Treatment Lets Men Experience Pain of Childbirth Now Playing Home Test a New Option For Colon Cancer Screening TRENDING Now Playing Oops! Man drops engagement ring in ocean mid-proposal Now Playing New additions to dictionary: 'Awesome sauce,' 'wine o' clock' Now Playing PTA to parents: Don't bake cupcakes - give us money! Now Playing Ed Sheeran: My lion tattoo is real after all Most Watched Now Playing Sponsored Content Alison Parker's boyfriend, station manager honor slain WDBJ journalists Now Playing Sponsored Content Watch these adorable twins pretend to be sleeping Now Playing Sponsored Content Husband of WDBJ shooting survivor: 'She remembers everything that happened' Now Playing Sponsored Content Details emerge about gunman Vester Flanagan Now Playing Sponsored Content Tamron Hall volleys with Serena Williams, Roger Federer Now Playing Sponsored Content Ed Sheeran: My lion tattoo is real after all Now Playing Sponsored Content Donald Trump: Univision's Jorge Ramos was 'totally out of line'