Hibiki is mortified to learn that even after getting into a routine of training, she’s actually gained weight, but she makes a common fitness rookie mistake: weight is not always a good indicator of health. What percentage of your weight is muscle as opposed to fat is far more useful, and muscle is denser and weighs more than fat.
After some lat pulldowns that work her back (she’s still too green for deadlifting), Hibiki heads to the gym’s fully-equipped protein bar, where a dickie-sporting Machio serves up delicious shakes during the 30-minute “golden time” after a workout. Still, that’s not enough for Hibiki, who wants more protein and so drags a weary Akemi to a steakhouse. Old habits die hard!
That said, Hibiki seems to be making mostly good decisions about her body, including taking a rest day when her body is telling her (through soreness) that she should. But she doesn’t want to just laze around the house either, so she and Akemi head to the pool. Hibiki stares with envy at Akemi’s figure, while Detective Akemi points out all the muscular people’s sports by the muscle groups they’ve defined.
Hibiki starts static stretching before activity, but Akemi stops her, citing a University of Zagreb study that indicates such stretching actually decreases performance, not to mention is bad for joints and tendons that haven’t warmed up. She suggests a series of dynamic stretching exercises instead, not too dissimilar from radio calisthenics. Unfortunately, an overeager Hibiki rips her too-tight swimsuit.
Hibiki spends the next day by visiting her best friend Uehara Ayaka’s house for the first time—the two became friends through mutual love of film, and only ever hung out in theaters up to now. Suddenly, Ayaka’s sister needs her help, and Hibiki learns the Uehara family business: an elite boxing gym!
The sisters’ dad was a champion boxer, and trained his daughters; Ayaka has the abs and muscle memory to show for it, but she still prefers movies. After successfully holding a planking pose for 30 seconds, Ayaka’s sister suggests Hibiki have a go at the heavy bag. Hibiki gingerly approaches it, then delivers a devastating right hook that breaks the bag, shocking everyone assembled. Looks like she had a hidden talent!
Dumbbell remains zanily good fun with some useful advice about weight training mixed in. Hibiki remains an utterly charming protagonist. It even eased off the ecchi fanservice this week. Guilty pleasure or no, the show just works—much like Hibiki’s punch. And then there’s that infinitely catchy OP. Keep it up!