User blog comment:Lord Loss/Monster Hunter Frontier Season Forward 5/@comment-184.38.86.22-20121021022101/@comment-3426677-20121124135302

Thats for how fast you regenarate health. With 2 pieces you only regenerate every 4 seconds when your health is at or above 125. With 5 pieces you regenerate every second when your health is at or above 50.