Currently available on 2 streaming services.

Streaming, rent, or buy How Heavy Are the Dumbbells You Lift? – Season 1:

Currently you are able to watch "How Heavy Are the Dumbbells You Lift? - Season 1" streaming on Crunchyroll Amazon Channel or buy it as download on Apple TV.

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)