2. The Achilles: Should You Rest It… or Are You Making It Worse?

Part 2 of a Weekly series on returning from Achilles tendinopathy.

When my Achilles first started talking, my instinct was simple:

Back off. Let it calm down. Then get back to training.

That’s not wrong. But it’s also not the full picture.

There Is a Window Where Rest Matters

Early on, what you’re often dealing with is tendon irritation—true tendinitis.

This is the stage where:

• The tendon is reacting to a recent spike in load

• It’s irritated, sensitive, and a little overwhelmed

• But the structure itself hasn’t started to break down yet

In that window, rest (or at least meaningful reduction in load) is absolutely appropriate.

If you respect it early:

• You give the tendon time to settle

• The tissue repairs cleanly

• You can get back to training relatively quickly

This is where a lot of people can resolve things in a week or two.

What’s Actually Happening Under the Surface

Here’s the slightly geeky—but important—part.

A healthy tendon is highly organized.The collagen fibers are lined up in a way that lets it handle load efficiently.

When you overload it:

• You create small amounts of disruption in that structure

If you then reduce load and allow recovery, your body repairs that tissue in the same organized way.

Stronger. More resilient. No problem.

Where It Starts to Go Sideways

The problem is when you don’t give it that window.

When you keep pushing through early symptoms:

• The tendon doesn’t get time to repair properly

• Your body still tries to fix it—but it does it fast and messy

Instead of clean, aligned fibers…you get more of a patchwork.

Disorganized. Less efficient. More reactive.

And if you keep stacking load on top of that?

Now you’re not dealing with short-term irritation anymore.

You’ve moved into tendinopathy.

This Is the Line Most Runners Cross (Including Me)

Early stage:👉 Could’ve backed off, let it settle, and moved on

What I did instead:👉 Let it “warm up” and kept training👉 Assumed manageable pain meant acceptable load👉 Kept stacking volume + intensity

That’s how a 1–2 week issue turns into something that sticks around.

Why Rest Starts to Fail

Once you’re in that tendinopathy phase, the rules change.

Now the tendon isn’t just irritated—it’s lost capacity to support you. The fibers are deconditioned and disorganized.

At that point:

• Rest will calm symptoms

• But it won’t rebuild structure

So you end up in the cycle: Rest → feel better → run → flare up

That’s where a lot of runners get stuck.

So What Should You Actually Do?

It depends on where you are in the timeline.

If you caught it early:

• Back off more than you want to

• Let it settle properly

• Don’t try to “train through it”

If it’s been lingering:

• Full rest isn’t the answer

• You need progressive, controlled loading

• While managing total stress from running

Most people miss this shift.

The Real Goal

It’s not just:“Make the pain go away.”

It’s: Restore the tendon’s ability to handle the load you want to put on it.

If you miss that, you stay stuck managing symptoms instead of actually improving.

If You’re Dealing With This Right Now

Ask yourself:

• Did I catch this early—or have I been pushing through it?

• Does it fully settle with rest, or keep coming back?

• Am I avoiding load… or rebuilding capacity?

Be honest.

Because the approach you take should match the stage you’re actually in—not the one you wish you were in.

What I’ll Cover Next

Next, I’ll walk through the part no one really talks about:

The cycle of testing, second-guessing, and trying to shortcut your way back.

Because that’s where this turned from a short-term issue… into something that stuck around.

If you’re dealing with something similar and want help navigating it, this is exactly what I coach athletes through.

Note: I’m a coach sharing my personal experience, not a medical professional. This isn’t medical advice—just what I’ve learned through my own rehab and from working with athletes.