How to Do Side-Lying Floor Stretch

Side-Lying Floor Stretch — start position demonstration photo
Start
Side-Lying Floor Stretch — end position demonstration photo
End

Start and end of one clean rep of Side-Lying Floor Stretch.

Quick facts

Primary muscleBack
Secondary muscles—
EquipmentBodyweight
CategoryStretching

How to perform Side-Lying Floor Stretch

  1. First lie on your left side, bending your left knee in front of you to stabilize your torso (use your abdominal muscles as well to hold you upright).
  2. Straighten your right leg and rest the right foot on the floor behind your left. Straighten your right arm over your head and gently pull on your right wrist to stretch the entire right side of the body. Switch sides.

Muscles worked

  • Back (primary): pulls the arms down and toward the torso and keeps the spine stable.

Sets & reps by goal

GoalSets × repsLoadRest
Strength3–5 × 3–5Heavy (~85%+)2–3 min
Hypertrophy3–4 × 8–12Moderate (~65–75%)60–90 s
Endurance2–3 × 15–20Lighter (~50–60%)30–45 s

As a mobility drill, hold each position for 20–40 seconds (or move slowly for reps) rather than training it to a heavy load.

Form tips

  • Start each rep by pulling the shoulder blades in first, then drive with the elbows — think of pulling with the elbows, not the hands.
  • Own the largest range you can control with clean form before you chase extra reps.
  • Ease in until you feel mild tension, never pain, and breathe out as you sink a little deeper.
  • Control the lowering phase — a 2–3 second descent builds more than dropping the weight.

Common mistakes

  • Yanking with the arms and forgetting the back, so the biceps give out before the target muscle does.
  • Cutting the range short to squeeze out extra reps instead of owning each full one.
  • Bouncing into the stretch instead of holding it steadily.

Frequently asked questions

What muscles does Side-Lying Floor Stretch work?

Side-Lying Floor Stretch is a focused movement that primarily works the back.

What equipment do I need for Side-Lying Floor Stretch?

None — Side-Lying Floor Stretch is a bodyweight movement, so you only need your bodyweight and a little space.

How many sets and reps should I do for Side-Lying Floor Stretch?

It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. As a mobility drill, hold each position for 20–40 seconds (or move slowly for reps) rather than training it to a heavy load.

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