Chapter 12

Umi Da! is the twelfth chapter of the manga Dumbbell Nan-Kilo Moteru?.

Plot
Near the end of summer Hibiki, Akemi and Ayaka go to the beach by bus. Satomi is coincidentally also on the bus despite wanting to be alone (away from any students) whilst hoping that they will part ways at the beach. They all notice that there isn't anyone else on the bus even though it's near the end of summer.

At the beach there is a sign saying no swimming allowed, a stranger walking by tells them that there was a school of hammerhead sharks off-shore. Hibiki wanted to get hit on at the beach (Satomi had the same plan). Sitting there doing nothing, Akemi wanted to exercise through swimming but decides to do burpees instead so the trip isn't a complete waste, convincing the others to join in. People passing by look at them weirdly as they are doing exercises on the beach.

Exercise Learned
The exercise focused on in this chapter are burpees.

Trivia

 * Umi da! (海だ, umida) means "It's [the] sea!".