Side Plank Single Knee Drive

Side Plank Single Knee Drive Exercise Description

The Side Plank Single Knee Drive blends a classic side plank with a controlled hip-flexion movement to challenge trunk stability under limb motion. Your primary targets are the lateral core—especially the external and internal obliques and transverse abdominis—working to resist lateral flexion and rotation while you maintain a neutral spine. The bottom hip’s gluteus medius helps keep the pelvis level, and the supporting shoulder girdle (serratus anterior and rotator cuff) stabilizes the forearm side. Driving the top knee toward the chest adds demand to the lumbopelvic region and engages the hip flexors of the moving leg without adding equipment. This bodyweight drill teaches you to keep ribs stacked over pelvis, hips stacked over shoulders, and a straight line from head to feet while the limbs move. Use smooth, controlled motion and steady breathing to reinforce alignment and core bracing throughout.

Muscle Groups: Abs, Obliques, Waist
Target Muscles: External Obliques, Internal Obliques
Assisting Muscles: Quadratus Lumborum, Transversus Abdominis
Stabilizing Muscles: Gluteus Medius, Infraspinatus, Serratus Anterior, Subscapularis
Body Area: Upper Body
Body Parts: Core
Body Surface: Side
Body Symmetry: Unilateral
Equipment: Bodyweight
Exercise Patterns: Other
Exercise Type: Strength
Functional Grouping: Trunk Lateral Flexors, Trunk Rotators
Joint Involvement: Single-joint
Muscle Location: Deep Side Abs, Side Abs
Movement Direction: Other
Muscle Position: Lateral
Gender: Male

How To Do The Side Plank Single Knee Drive Exercise

‘- Lie on your side with legs extended; stack feet and stack hips/shoulders.
– Place the forearm on the floor, elbow directly under the shoulder; forearm perpendicular to your torso.
– Set a gentle abdominal brace; align ribs over pelvis and keep a neutral neck.
– Press the forearm and bottom foot into the floor to lift hips into a straight line from head to feet.
– Actively “push the floor away” to engage the serratus; avoid shrugging the shoulder.
– Keep hips high and level; bottom glute and outer hip stay active.
– Without rotating the torso, lift the top knee toward the chest (hip flexion); exhale during the drive.
– Pause briefly, then return the top leg to the start with control; inhale as you reset.
– Maintain stacked ribs and hips—no sagging, piking, or flaring of the rib cage.
– Switch sides to train both directions with the same form standards.

Side Plank Single Knee Drive Tips

‘- Stack your feet, hips, and shoulders in a straight line before lifting into the plank.
– Position your elbow directly under your shoulder with the forearm perpendicular to your torso.
– Set a gentle abdominal brace and align your ribs over your pelvis while keeping your neck neutral.
– Press the forearm and bottom foot firmly into the floor to lift your hips into a straight line from head to feet.
– Actively “push the floor away” with your forearm to engage the serratus and avoid shrugging the shoulder.
– Keep your hips high and level, feeling the bottom glute and outer hip stay active.
– Drive the top knee toward your chest without rotating your torso, exhaling during the knee drive.
– Pause briefly at the top of the knee drive, then return the leg to the start with control as you inhale.
– Maintain stacked ribs and hips throughout—avoid sagging, piking, or letting the rib cage flare.
– Switch sides and repeat, using the same alignment and control on both directions.

Side Plank Single Knee Drive Beginner Introduction

The Side Plank Single Knee Drive combines a sideways support position with a controlled leg action, creating a demanding bodyweight core exercise. The body is held on one forearm and the side of the lower foot while the upper leg bends toward the torso and returns, so the midsection has to stay steady as the limb moves. This pattern places strong emphasis on the side abs and deep abs, which work to keep the torso from tipping or twisting. The upper glutes of the lower hip contribute to keeping the pelvis from dropping, while the supporting shoulder and nearby chest muscles stabilize the arm on the floor.

Because the entire body forms a long line as the leg drives forward and back, the exercise highlights posture, tension, and control rather than speed. The moving leg also engages the hip flexors, adding extra challenge around the hips and waist without any added equipment. Many people use this type of movement to build awareness of full-body alignment, breathing, and core stability in a side-lying position.