Yuna is spending about 7+ hours/day on training. She shows up at 9am to warmup, then steps on the ice at 10am. She does interval training for 40 minutes (7 minutes of fast skating / 1 min rest. Repeat 5 times).
Afterward, she practices her programs. Per Coach Shin, Yuna doesn't have the stamina to last til the end of the long program. Yuna sometimes stays behind and trains extra, even after Kwak Min Jung and Kim Haejin left.
After she's done w/ her training around 2pm, she has lunch & relaxes for a little bit. Then she does off-the-ice training, and this continues until 5pm. Shin says Yuna appears to be very tired during training, and she sighs in front of the younger skaters and jokes, "Ah I think I'm old now...!" But Shin says Yuna is very competitive, so she doesn't tolerate not being able to do better.