HaltungWarumKeeping: Why you should never look up when tankingsixrepsFebruary 4, 2025 by sixrepsFebruary 4, 2025012 If you want steel abdominal muscles, plank for minutes – and look nice and humbly to the ground. If you look too far up, you...
effektiveHaltungGood posture: 5 effective exercises against a hollow backsixrepsNovember 29, 2024 by sixrepsNovember 29, 2024019 What is a hollow back anyway? If the abdominal or gluteal muscles or the muscles on the back of the thighs are too weak, they...
