HIIT・短時間トレーニング 【Kamal – 4:30 AM Discipline】HIIT Jump Rope at 48 – Why This Cardio Method Burns Fat and Builds Coordination Channel:Kamal - 4:30 AM DisciplineHIIT jump rope combines cardiovascular conditioning with coordination training in the ... 2025.09.01 HIIT・短時間トレーニング