How Heavy Are the Dumbbells You Lift?: Silverman Gym Intense Training Course
Dumbbell Nan Kilo Moteru?: Silverman Gym Oni Tore Kouza · ダンベル何キロ持てる？ シルバーマンジム鬼トレ講座
Synopsis
Specials included on the Dumbbell Nan Kilo Moteru? DVD/BD volumes 3 and 4, respectively. Also included on Funimation's US Blu-Ray release. They are completely new extensive versions of exercise sessions normally seen at the end of each TV anime episode.
Studios: Doga Kobo
Source: MANGA