1. "If you can stand up every 20 minutes — even if you do nothing else — you change how your body responds physiologically." — Gretchen Reynolds [more exercise and fitness tips here]

    "If you can stand up every 20 minutes — even if you do nothing else — you change how your body responds physiologically." — Gretchen Reynolds [more exercise and fitness tips here]

  2. gretchen reynolds

    sitting

    standing

    exercise