by Johan Moller
Forearms Planking: Place elbows underneath shoulders, arms slightly pointing inwards.
Straight Arms Planking: Place hands under your shoulders and keep your arms straight.
Mistake: Don't place your hands too far ahead or your back will arch up!
Mistake: Always keep your back straight!
Sideways Plank: Place elbow under your shoulder and your hand flat on the ground.
Always keep a straight back.
Mistake: Keep your back straight, don't leave it hanging!
Backward Plank: Hands are pointing towards your feet.
Mistake: Always maintain tension, don't leave yourself hanging.