زفاف - Back Workout Poster - Laminated

Back Workout Poster - Laminated

The focus on building back and shoulder muscles is often lost in the hyper focus on leg speed and strength, but after years of hard contact & speed skating stance, you'll need them to be strong to keep neck, shoulder, and back injuries at bay. Back pain during endurance drills is because the muscles are *over stretched* due to good derby form. Make them strong, and the pain will stop. :D // Derby #fitness

مصدر : http://www.fitnessgiant.com/bacworfloor.html

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