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Post-ACL Reconstruction (Intermediate) — 25 Minute Session

A knee-friendly strength + stability routine to rebuild single-leg control and confidence (~25 minutes).

Warm-Up (5 minutes)

Increase blood flow and gently prep knee range of motion.

Stationary Bike
Stationary Bike4 min
How to

A low-impact cardio exercise done on a bike that trains your legs and builds aerobic fitness.

  1. Adjust the seat so your knee stays slightly bent at the bottom of each pedal stroke.
  2. Sit tall, place your feet on the pedals, and hold the handles lightly.
  3. Start pedaling smoothly at an easy pace.
  4. Increase resistance or speed to match your workout goal.
  5. Ease the pace down before you stop pedaling.
Form cues
  • Keep your chest up
  • Pedal in smooth circles
Common mistakes
  • Locking your knees at the bottom
  • Hunching your shoulders over the handles
Heel Slide
Heel Slide1 min
How to

A lying leg slide that trains core control and hip movement one side at a time.

  1. Lie on your back with knees bent and feet flat.
  2. Brace your core and keep your low back steady.
  3. Slide one heel away until your leg is almost straight.
  4. Pull the heel back to the start with control.
  5. Finish your reps, then switch legs.
Form cues
  • Move slowly and stay braced.
  • Keep your pelvis still.
Common mistakes
  • Arching your lower back as the leg slides out.
  • Letting your hips rock side to side.
Quad Set
Quad Set30 sec
How to

An isometric thigh squeeze that trains your quad with your leg straight.

  1. Sit or lie with one leg straight and toes up.
  2. Tighten your thigh and press the back of your knee down.
  3. Hold the squeeze and breathe steadily.
  4. Relax, then repeat for your reps or time.
  5. Finish your set, then switch legs.
Form cues
  • Keep your kneecap facing up
  • Squeeze the front of your thigh
Common mistakes
  • Lifting your hip off the floor
  • Holding your breath

Circuit A — Hip + Knee Control

Move with control; keep pain-free range. Rest as needed to maintain form.

Glute Bridge
Glute Bridge10x
How to

A floor hip lift that trains your glutes and hamstrings with both feet planted.

  1. Lie on your back with knees bent and feet flat, hip-width apart.
  2. Brace your core and press your arms lightly into the floor.
  3. Drive through your heels and lift your hips until your body forms a straight line.
  4. Squeeze your glutes at the top, then lower with control.
  5. Repeat for your reps.
Form cues
  • Keep your ribs down
  • Drive through your heels
Common mistakes
  • Arching your lower back at the top
  • Pushing through your toes
Side-Lying Clamshell
Side-Lying Clamshell12x each side
How to

A side-lying hip move that trains your outer glutes and hip rotation control.

  1. Lie on one side with knees bent and feet stacked.
  2. Brace lightly and keep your hips stacked.
  3. Keeping feet together, lift your top knee without rolling back.
  4. Lower your knee with control to the start.
  5. Finish your reps, then switch sides.
Form cues
  • Keep your hips stacked.
  • Move from the hip, not the low back.
Common mistakes
  • Rolling your pelvis backward to lift higher.
  • Letting your feet separate.
Terminal Knee Extension (Band)
Terminal Knee Extension (Band)12x each side
How to

A knee extension drill that trains your quads and control near a straight knee.

  1. Anchor a band behind one knee and step back to add light tension.
  2. Stand tall with that foot flat and your knee slightly bent.
  3. Straighten your knee by tightening your thigh.
  4. Pause briefly, then bend your knee with control.
  5. Finish your reps, then switch legs.
Form cues
  • Keep your foot flat
  • Move from the knee, not the hips
Common mistakes
  • Letting your heel lift off the floor
  • Snapping the knee back too fast
3 rounds · 15 sec rest
1 min rest

Circuit B — Functional Strength + Balance

Use a chair height that allows good knee alignment; keep steps low and controlled.

Sit to Stand
Sit to Stand10x
How to

A chair-based squat pattern that trains your thighs and glutes for standing strength.

  1. Sit near the front of a chair with feet flat and hip-width apart.
  2. Lean slightly forward and brace your core.
  3. Press through both feet and stand tall.
  4. Push your hips back and sit down with control.
Form cues
  • Keep your knees tracking over your toes
  • Stand tall at the top
Common mistakes
  • Letting your knees cave inward
  • Dropping hard onto the chair
Step Up
Step Up8x each side
How to

A single-leg climb onto a step that trains your quads, glutes, and balance.

  1. Stand facing a sturdy step with one foot fully on top.
  2. Lean slightly forward and drive through the front foot to stand up.
  3. Bring your back foot onto the step with control.
  4. Step back down with the same back foot, then lower the front foot.
  5. Finish your reps, then switch legs.
Form cues
  • Keep your chest tall
  • Drive through your whole front foot
Common mistakes
  • Pushing off too much with the back foot
  • Letting your front knee cave inward
Single-Leg Balance
Single-Leg Balance30 sec each side
How to

A one-leg standing hold that trains balance and stability in your foot, ankle, and hips.

  1. Stand tall with feet hip-width apart and arms relaxed.
  2. Shift your weight onto one foot and lift the other foot off the floor.
  3. Hold steady, keep your torso tall, and breathe slowly.
  4. Lower your foot with control, then switch legs.
Form cues
  • Keep your hips level
  • Look at one spot ahead
Common mistakes
  • Letting your hips twist or drop
  • Holding your breath
Standing Calf Raise
Standing Calf Raise12x
How to

A standing lower-leg move that trains your calves by lifting and lowering your heels.

  1. Stand tall with feet hip-width apart and toes pointing forward.
  2. Press through the balls of your feet and lift your heels high.
  3. Pause briefly at the top without leaning forward.
  4. Lower your heels with control to the floor.
Form cues
  • Keep your knees softly straight.
  • Rise straight up, not forward.
Common mistakes
  • Bouncing through the reps.
  • Letting your ankles roll outward.
2 rounds · 15 sec rest

Cool-Down (3–4 minutes)

Downshift and restore comfort after strengthening.

Calf Stretch
Calf Stretch45 sec each side
How to

A standing calf stretch that targets the back of your lower leg with a steady hold.

  1. Stand facing a wall and place your hands on it.
  2. Step one foot back and keep that heel on the floor.
  3. Bend your front knee until you feel a calf stretch.
  4. Hold and breathe slowly without bouncing.
  5. Finish the hold, then switch legs.
Form cues
  • Keep your back heel down
  • Point both toes forward
Common mistakes
  • Bouncing in the stretch
  • Letting the back heel lift
Hamstring Stretch
Hamstring Stretch45 sec each side
How to

A held stretch for the back of your thigh that targets your hamstrings.

  1. Sit tall with your target leg straight and toes up.
  2. Hinge at your hips and reach toward your foot.
  3. Stop when you feel a gentle stretch behind your thigh.
  4. Hold the stretch and breathe slowly.
  5. Release slowly, then switch sides if stretching one leg.
Form cues
  • Keep your back long.
  • Hinge from your hips.
Common mistakes
  • Rounding your back to reach farther.
  • Bouncing in the stretch.
Rebuilding the Quad-Hamstring Co-Contraction

Rebuilding the Quad-Hamstring Co-Contraction

Quad Sets and Terminal Knee Extensions specifically retrain VMO firing patterns lost after ACL injury, while Heel Slides restore hamstring length under load. Together, they rebuild the co-contraction timing that protects your reconstructed ligament before progressing to full weight-bearing movements like Step Ups.

Why Single-Leg Control Is Your Real Benchmark

Why Single-Leg Control Is Your Real Benchmark

ACL reconstruction doesn't just repair tissue — it severs proprioceptive nerve endings that tell your brain where your knee is in space. Single-Leg Balance and Sit-to-Stand directly retrain this neuromuscular feedback loop, which is why athletes who skip this work re-injure at dramatically higher rates even after full strength returns.

Loading the Graft Without Overloading the Joint

Loading the Graft Without Overloading the Joint

This routine follows a proximal-to-distal progression — Glute Bridges and Clamshells load hip abductors first, reducing valgus stress before your knee handles Step Up demands. Track your Single-Leg Balance hold time each session; when you can hold 30 seconds eyes-closed, you're ready to increase Step Up height or add a tempo challenge.

Post-ACL Reconstruction (Intermediate) — 25 Minute Session | Mighty Nimble | Mighty Nimble