How Heavy Are the Dumbbells You Lift? - Season 1 - Eps 1: Why Don't You Try Strength Training?
Dismayed by her recent weight gain, high school girl and food lover Hibiki Sakura joins Silverman Gym. The hordes of muscle men at the gym are intimidating, but Hibiki gives strength training a try after meeting the handsome trainer Machio Naruzo.
About How Heavy Are the Dumbbells You Lift?

Title: How Heavy Are the Dumbbells You Lift?
First Air Date: 2019-07-03
Last Air Date: 2019-09-18
Status: Ended
Rating: 7.8/10 (from 256 votes)
Language: JA
Seasons: 2
Total Episodes: 12
Network: AT-X
Genres: Animation, Comedy
Production Companies: Doga Kobo, Anitus Kōbe, WHITE FOX Izukōgen Studio, A-Real, J.C.STAFF, Jumondou, OLM, Studio Gram, Tsumugi Animation Research Institute
Synopsis
Hibiki Sakura is your average high school girl, with a voracious appetite. Noticing her clothes tightening in lieu of her slowly expanding waistline she decides to look into enrolling in the nearby gym. There she runs into a girl from her grade named Souryuuin Akemi. Akemi, who has a muscle fetish tries to get Hibiki to enroll in the gym despite its high ratio of macho men. Thankfully a beautiful trainer, Machio, appears and unknowingly convinces her to enroll and start her quest to a great body.
Cast

Fairouz Ai
Hibiki Sakura (voice)

Sora Amamiya
Akemi Soryuin (voice)

Kaito Ishikawa
Naruzo Machio (voice)

Shizuka Ishigami
Ayaka Uehara (voice)

Nao Toyama
Gina Boyd (voice)

Yui Horie
Satomi Tachibana (voice)

Tessyo Genda
Harnnold Dogegenchonegger / Narrator (voice)