Backfitpro. Backfitpro. @backfitpro9992. @backfitpro9992 19.7K subscribers 25 videos. More about this channel. Subscribe. Home. Videos. Playlists. Community. ... <看更多>

Dec 28, 2018 - 3101 Likes, 156 Comments - Professor Stuart McGill (@backfitpro) on Instagram: “The birddog is the first exercise of the Big Three, ... ... <看更多>