Start in basic plank position with your forearms on the floor. Raise one leg and the opposite arm simultaneously. Hold your abdominal muscles tight. Keep your back and shoulders level with the floor to avoid twisting. This plank is especially good for the multifidus muscles that run along the spine.
#1 on 2019-Ott-25 Ven 10:10+3600
#2 on 2019-Ott-25 Ven 10:01+3600