[subtitled]1.5x version of training for back muscles (once every 2 days)
7:21
【横腹も腰も】ウェストを絞って薄いお腹を作るなら腹筋と背中を同時に鍛えるこのトレーニング！
6:17
[6 min] 1.5 times the medium intensity mode of those 4 minutes and 8 types of sit-ups.
9:42
8 minutes intensive] 2.5 times the intensity of that 4 minutes 8 kinds of sit-ups Super hell mode
10:44
[subtitled]Increased range of motion in the hip joints really changes the way you run!
5:32
【4分集中】背筋を鍛える８種トレーニング
4:55
【4min 4 weeks】Japanese abs workout
8:02
お尻が上がる‼️‼️5分間トレーニング ！
7:30