Favorite Movement for Hamstrings & Glutes | Erin Stern
IFBB Figure Pro Erin Stern shares her favorite movement to develop your hamstring and glutes!
Follow Erin Stern's "Achieve Your Ideal Physique" series here: http://www.peakatp.com/news/athlete-b...
Erin's athlete profile: http://www.peakatp.com/about/team-peak/