Stop Wasting Energy When You Run (Fix This First)

November 18, 2025 | By

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That runner with the ‘ugly’ arm swing just passed you at mile 8 looking perfectly fresh. Meanwhile, your picture-perfect form has you feeling tight, twisted and tired. Why is that? In this post, I’ll answer that and cover why arm swing matters for energy and balance with science to back it all up.

Listen to audio podcast below on your next run or watch the video above to learn more

What You’ll Learn

In this episode I’ll cover:

  • Why arm swing matters for energy and balance
  • Four simple fixes you can use today
  • Four drills you can do to improve

“Most runners obsess over cadence and stride but ignore the upper body that drives it all.”

The 6 Levers of Running Form

There are 6 things you can focus on to run with better form.

Running with better form doesn’t mean you will “look good”. It’s about running economy—a fancy run science word for running efficiency. How fast or far you go with the least amount of energy.

  1. Foot strike: Forefoot, midfoot and heel striking. Spoiler – they don’t matter as much as you think but midfoot is best.
  2. Posture: Be somewhat straight with a slight lean forward from your torso, not your neck. Think hanging from a Christmas Tree like you’re an ornament with a string on the back of your shirt.
  3. Breathing: Yeah, breathing is part of form. Nose breathe on easy runs and mouth breathe on hard runs. Stay relaxed though.
  4. Cadence: This is how many steps you take per minute like your heart rate but for your feet. Less is usually not as efficient. There is a magical number of 180… but it doesn’t apply to some.
  5. Stride length: This is the over vs under striding issue that most new runners have and tired runners start doing. When people hear this they stretch out. That’s not fully correct, because you might overstride, lower your cadence and spend too much time on the ground. Not efficient.
  6. Arm swing: This is what I’ll focus on. Most new runners don’t think about it but it can unlock some serious gains.

Is arm swing actually worth worrying about, or is it just cosmetic?

What is Arm Swing?

Arm swing is the coordinated back-and-forth motion of your upper body: shoulders, elbows, and hands. It cancels leg torque and keeps your torso stable. I didn’t care about it until I learned to swim.

In the water you can’t effort your way to fast times like you can running, walking or cycling.

You can try harder and still be slow with bad technique.

Instead you have to go slower which allows you to move smoothly, and suddenly be faster with less effort. Same rule applies to running: tighten the mechanics and you run cleaner.

A 2014 study in the Journal of Experimental Biology tested runners with different arm positions—behind the back, across the chest, and on top of the head.

The worse the arm position, the worse the energy cost. Running with hands on your head? That’s a brutal 13% increase in metabolic cost compared to normal arm swing.

And some cool stuff: when researchers blocked arm swing, runners automatically increased their torso rotation to make up for it. Your body knows it needs that counterbalance, so give it what it wants.

Torque is like driving with the steering wheel slightly turned left. You waste fuel and after a 20 mile drive, you’ll end up at the wrong place and probably crash.

And from an energy view – it’s like leaving a window open at highway speed; tiny losses add up to wasted fuel.

Speaking of tiny losses…

Here’s the first, simplest thing to check.

Fix & Drill # 1 — Shoulder Drop, Not Shrug

Drop the shoulders. That’s it. Super simple. Don’t carry tension in your traps—the big muscles of your back.

Why should you do this?

Because raised shoulders create constant tension and waste energy holding that position. Think of flexing your bicep for 30 minutes straight; exhausting, right?

The Drill To Practice It: Shoulder Drop

Do shoulder shrugs, then release and drop 10 times before your run. Do that before you get out the door in front a mirror or reflective surface so your brain and body can get what it feels and looks like.

During your warm-up, every 2 minutes do a body scan: check if shoulders crept up, exhale hard, and let them drop again.

Common mistake:

Collapsing the chest when trying to ‘relax.’ Relax shoulders without slumping. Needs a strong enough core. Got a weak core? No problem, just strength train more and do some planks.

Fix & Drill #2 — Elbow Angle ≈ 90° (But Soft)

Aim for a soft 90 degrees at mid-stride with your elbow. Perfectly bent in the middle— not locked, not straight.

Why:

The elbow hinge gives leverage without wasting rotation. Imagine rowing with a broomstick versus a proper oar.

The Drill To Practice It: Elbow Angle

Standing in place, pump your arms for 20 reps while looking in a mirror or filming yourself—watch for that 90-degree bend at mid-swing. Then run easy for 400 meters focusing only on keeping that elbow hinge.

Common mistake:

Straight-arm windmills that send rotation into the torso.

Okay. Elbows sorted. Now stop swinging across your body.

Fix & Drill #3 — Drive Back, Don’t Cross

Drive the hand back. Finish behind the hip. Don’t cross the midline.

Why:

Crossing the body causes counter-rotation and fights the legs. Think piston motion, not a windshield-wiper sweep.

The Drill To Practice It: Drive Back

During your next easy run, focus on one arm for 1 minute: drive your hand back until it passes your hip pocket, then switch arms. Alternate until it feels natural on both sides.

Common mistake:

Thinking longer arc across the body equals more power.

How does the arm pattern actually help the legs?

The Study on Arms and Legs Relationship

Arms and legs are neurologically linked—like, literally wired together in your spinal cord. A 2001 study in the European Journal of Neuroscience used walking to prove this: when researchers disturbed one leg during walking, arm muscles responded in just 65-80 milliseconds. That’s faster than conscious thought.

The study found flexible neuronal coupling between your limbs—a task-dependent connection that coordinates upper and lower body movement. While this was tested in walking, the same neural pathways fire during running. When your arm motion is consistent, your nervous system uses these connections to sync timing. Result? Smoother, less effortful steps.

Like pedaling a bike smoothly — when your legs and body work together in rhythm, you coast easier. Fight the rhythm and every pedal stroke feels harder.

And onto the last tip – Hands and grips matter more than you think.

Fix & Drill #4 — Hands Low; Loose Grip With Thumbs Up

Hands should sit around the belt line. Fingers relaxed with thumbs pointed up.

Why:

Because when shoulders creep up (usually from fatigue or tension), your hands drift high, which wastes energy. You’re basically carrying your arms instead of letting them swing. High guard is for boxing, not efficient running.

The Drill To Practice It: Hands Low & Loose

Run 30 seconds imagining you’re holding a potato chip between each thumb and finger—firm enough not to drop it, light enough not to crush it. Check hand position: they should hover around your waistband or shorts.

Common mistake:

Clenched fists or holding phone/water on normal runs.

Those are your four drills. Pick one per run this week and rotate through them. By week’s end, you’ll have done all four.

“A stiff, pretty arm swing burns fuel faster than a sloppy one done right.”

What Happens When You Put All of That Together?

Remember that runner with the ‘ugly’ swing from the intro? Turns out their form probably wasn’t ugly at all—it just looked different. What matters isn’t looking like a magazine cover.

What matters is this super easy to remember sequence:

  • Drop shoulders
  • 90 degree elbow
  • Drive back
  • Loose hand with thumbs pointed up

Nail those four things YOUR way, and you’ll be the one looking fresh at mile 8 with reduced torso rotation, less wasted vertical motion, cleaner cadence. A small 1% better focus that stacks with everything else.

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