Plank vs Crunches vs Cable Woodchops: Core Training Science

Plank (and Side Plank)

Standard Plank:

1. Set up — start in a push-up position, forearms on the floor, elbows directly under shoulders.
2. Position — body in a straight line from head to heels, core braced, glutes engaged.
3. Hold — maintain the position without letting your hips sag or rise.
4. Breathe — breathe steadily; don't hold your breath.
5. Duration — hold for 30-60 seconds (or until form breaks).

Key cues: Straight line — imagine a broomstick along your spine. Core braced — as if preparing to be punched. Glutes engaged — squeeze your glutes to protect your lower back. No sagging — hips should not drop toward the floor.

Side Plank (for obliques):

1. Lie on your side, propped up on your forearm, elbow under shoulder.
2. Stack your feet, lift your hips until your body forms a straight line.
3. Hold, keeping your core braced and hips lifted.
4. Repeat on the other side.

Crunch (and V Crunch)

Standard Crunch:

1. Set up — lie on your back, knees bent, feet flat on the floor.
2. Position — hands behind your head (don't pull on your neck) or crossed over your chest.
3. Curl — lift your shoulder blades off the floor, curling your ribcage toward your pelvis.
4. Squeeze — pause at the top, squeezing your abdominals.
5. Lower — control the descent back to the starting position (2-3 seconds).
6. Repeat — keep tension throughout; don't use momentum.

Key cues: Chin off chest — keep a fist-sized gap between chin and chest. Curl, don't sit up — only your shoulder blades lift. No pulling on neck — hands are for support, not leverage.

V Crunch (for lower abs):

1. Lie on your back, legs straight, arms extended overhead.
2. Simultaneously lift your upper body and legs, forming a "V" shape.
3. Squeeze at the top, lower under control.

Cable Woodchop (High-to-Low & Low-to-High)

High-to-Low Woodchop:

1. Set up — attach a rope or handle to a cable pulley at high position.
2. Position — stand perpendicular to the cable, feet shoulder-width apart, arms extended.
3. Rotate — pull the handle diagonally downward across your body, rotating your torso.
4. Squeeze — pause at the bottom, feeling your obliques contract.
5. Return — control the return to the start position (2-3 seconds).
6. Repeat — complete all reps on one side before switching.

Low-to-High Woodchop (for variety):

1. Attach the cable at a low position.
2. Pull diagonally upward across your body.
3. This variation targets the obliques from a different angle.

Key cues: Rotate from your core — not just your arms. Keep a slight bend in your knees — allows for rotation. Control the movement — don't let the weight swing you. Squeeze at the bottom — feel the oblique contraction.

Workout 1: Core Stability + Endurance

• Plank — 3 sets of 45-60 seconds (bodyweight) — Focus on form
• Side Plank — 3 sets per side of 30-45 seconds (bodyweight) — Oblique focus
• Crunch — 3 sets of 15-20 reps (bodyweight) — Slow tempo
• Bird-Dog — 3 sets per side of 10 reps (bodyweight) — Spinal stability

Workout 2: Hypertrophy + Six-Pack Focus

• Crunch — 4 sets of 15-20 reps (bodyweight) — High reps
• V Crunch — 3 sets of 12-15 reps (bodyweight) — Lower abs
• Cable Woodchop — 3 sets per side of 10-12 reps (moderate load) — Rotational
• Leg Raises — 3 sets of 12-15 reps (bodyweight) — Lower abs

Workout 3: Functional + Athletic Core

• Cable Woodchop — 4 sets per side of 10-12 reps (moderate load) — Rotational power
• Plank (weighted) — 3 sets of 30-45 seconds (moderate load) — Add plate on back
• Side Plank (weighted) — 3 sets per side of 30 seconds (moderate load) — Add plate on hip
• Med Ball Rotational Throws — 3 sets per side of 8-10 reps (light load) — Explosive rotation