MAKEN-KI!: DOKI
DOKI! MAKEN-KI! HIMITSU NO KUNREN

"First muscle training animation ever," a 16-year-old girl named Hinako leads exercises in push-ups, sit-ups, and squats. Hinako was once a human, but she was turned into an anime character when she was a second-year middle-school student. (Source: Anime News Network)

Blu-ray/DVD specials of Maken-Ki! Tsuu.

A series of specials included in the 'Valkyrie Drive: Mermaid' DVD/BD volumes.

The anime follows five girls who are aiming to become idols as they do different exercise routines such as push-ups, situps, dance, yoga, stretching, tai chi, and more.

Special episodes bundled with Blu-ray volume of Anitore! XX.