Chapter 13

Leg Curls! is the thirteenth chapter of the manga Dumbbell Nan-Kilo Moteru?.

Plot
The school's sports day festival is announced and Hibiki is selected for the track team due to lots picked at random.

At the gym, Machio is doing wrestler bridges with Hibiki, Akemi and Ayaka sitting on top of him whilst discussing about the relay. Satomi is shocked of seeing him doing wrestler bridges whilst they are sitting on him. Machio asks if Hibiki is a slow runner and she replies that she is in comparison to Ayaka and Akemi who are both fit. He recommends doing leg curls as the hamstrings are one of the key muscles in running faster. While doing her reps her shorts rip, without her noticing.

Exercise Learned
The exercise focused on in this chapter are leg curls.