HOW HEAVY ARE THE DUMBBELLS YOU LIFT?: SILVERMAN GYM INTENSE TRAINING COURSE

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. — Description from AniList community (anilist.co).