The Copenhagen hip lift is a side plank with a brutal twist. If you want to take your core training up a notch, look no further.
Copenhagen Side Plank for Adductor Strength
Copenhagen Plank Progressions
Powerlifting Technique: Copenhagen Plank
Copenhagen Side Plank. N8 Training Systems
Try this KNEE, CORE AND HIP STRENGTHENING exercise: the Copenhagen side plank (with progressions)
How to Perform and Progress the Copenhagen Plank
Physical Therapy Berlin - 3 Dimensional Physical Therapy
Master Your Hip Function with The Copenhagen Plank — Advanced Human Performance Official Website
Long Lever Copenhagen Plank Exercise Tutorial - Proper Form and Technique