デビッド・ポーコックさんのインスタグラム動画 - (デビッド・ポーコックInstagram)「What are your favourite core exercises? Or the ones you find most challenging? ⁣ ⁣ Here are the core exercises from a gym session last week that I had time to film. I haven't done the swiss ball pikes much before (the third exercise) - they were put in there to work my hip flexors, which they definitely did. I don't think my form was great: probably need to be slower and have swiss ball less on my knees and quads, more on my shins and feet..⁣ ⁣ ⁣ ⁣ ⁣ ⁣ ⁣ ⁣ #trainingtuesday #core #rugby #training ⁣」5月7日 4時01分