# Pectorals | FREE 4K Videos | 321 STRONG > After decades of reaching forward for daily tasks — driving, cooking, typing, and reading — the pectoral muscles progressively shorten and pull the shoulders into a rounded position. This age-related postural change, known as thoracic kyphosis, accelerates after 50 as the tissue becomes less elastic and the forward pull becomes self-reinforcing. Shortened pectorals compress the rib cage and reduce breathing capacity, restrict shoulder mobility for overhead tasks, and contribute to the stooped appearance that many people mistakenly accept as an inevitable part of aging. Rolling the chest directly opposes this pattern by restoring tissue length and mobility to muscles that rarely get the attention they need. **URL:** https://localhost/videos/pectorals?lang=ja --- [動画一覧に戻る](/videos?lang=ja) [English](/videos/pectorals) [日本語](/videos/pectorals?lang=ja) # Pectorals Chest and pectoral muscle release Get the roller used in this video The 321 STRONG massage roller: free Prime shipping, backed by 1000s of 5-star reviews. [Shop on Amazon](https://www.amazon.com/dp/B01FOS1WJK?maas=maas_adg_48370A6D4EC630CF09AAE2A73C18BBDE_afap_abs&ref_=aa_maas&tag=maas&321src=video-single) ## この動画について After decades of reaching forward for daily tasks — driving, cooking, typing, and reading — the pectoral muscles progressively shorten and pull the shoulders into a rounded position. This age-related postural change, known as thoracic kyphosis, accelerates after 50 as the tissue becomes less elastic and the forward pull becomes self-reinforcing. Shortened pectorals compress the rib cage and reduce breathing capacity, restrict shoulder mobility for overhead tasks, and contribute to the stooped appearance that many people mistakenly accept as an inevitable part of aging. Rolling the chest directly opposes this pattern by restoring tissue length and mobility to muscles that rarely get the attention they need. ### テクニックの実行方法 1 Lay the foam roller down on the mat in front of you, parallel with your body. 2 Lower yourself so your chest is on the roller, starting with the roller near your shoulder. 3 Roll slowly inward across your chest toward your pectorals, searching for any spots of tenderness — just one inch at a time. 4 When you find a tender spot, pause and hold on it before continuing to roll. 5 Keep the movement nice and slow throughout, scanning the chest muscles for areas of tension. 6 Breathe with the rolling movement. Control the pressure by using your hands or knees on the ground to reduce intensity as needed. 7 Breathe into the pressure so the muscles can relax, then continue searching back and forth until all tension has released from your pectorals. ### 効果 Restores length to the pectorals shortened by decades of forward-reaching tasks — driving, typing, cooking — so your shoulders can sit back where they belong Counters the forward shoulder pull that compresses the rib cage and limits breathing capacity, letting your chest open and expand fully again Leaves you standing taller with shoulders back and chest open — the satisfying reset that makes every breath feel deeper after rolling **プロのコツ：** 最良の結果を得るために、製品ガイドと一緒にこの動画をご覧ください。各テクニックに時間をかけ、体の声に耳を傾けてください。 [ローラーを購入](https://www.amazon.com/dp/B01FOS1WJK?maas=maas_adg_48370A6D4EC630CF09AAE2A73C18BBDE_afap_abs&ref_=aa_maas&tag=maas&321src=video-single) #### 動画詳細 再生時間: 1:21 画質: 4K (2160p) レベル: 全レベル対応 #### 他の動画 [全13動画を見る](/videos?lang=ja) ## このテクニックについてもっと読む この動きを扱っている321strong.comのガイドと回答です。 [記事 Pectoral Dumbbell Exercises: Build a Stronger Chest The best pectoral dumbbell exercises you can do at home or the gym. Includes chest press variations, flyes, pullovers, and recovery tips from 321 STRONG.](/blog/pectoral-dumbbell-exercises-build-a-stronger-chest)