Sports animes that have very cute and hot girls doing exercises that also have educational situations in teaching the intricates of the exercises/sport being shown in the series.
Dumbbell is focused only on gym training and the correct way to doing that training to avoid injuries, it also presents a lot of tips to doing simple exercises without spending too much money. Harukana is rather centered on beach volley and the tactics/strategies the sport is played with more character development along the way.
Both animes have comedic situations and very sexy situations without putting off the viewer at any moment. Highly recommended to people who like CGDCT anime and persons who want to train your body.