Running in the Heat After 40: Why I Did Not Follow My Garmin Coach Plan

Yesterday evening, I went out for a run.

But this time, I did not follow my Garmin Coach workout exactly.

The reason was simple.

It was too hot.

The temperature was around 29°C, and my body did not feel like it wanted a structured workout. I am currently following a Garmin Coach half marathon training plan, but yesterday I decided not to force the plan.

Instead, I ran by feel.

As a beginner runner in my 40s, I am learning that following a plan is important.

But I am also learning that listening to my body may be even more important, especially when the weather is hot.

Why I Changed the Plan

Garmin Coach gives me structure.

That structure is helpful.

It tells me when to run, when to recover, and how the workout should be organized.

But a watch cannot feel the heat exactly the way my body feels it.

Yesterday, the air felt heavy.

The weather was warm, and I did not want to push too hard just because the plan said so.

So I changed the goal.

Instead of trying to complete the workout perfectly, I decided to move carefully.

Run when I felt okay.
Walk when I needed to.
Keep the effort easy.
Finish without forcing my body.

That became the real plan.

Yesterday’s Garmin Data

Here is the key Garmin data from the run.

Metric	Data
Distance	3.98 km
Total Time	31:04
Moving Time	30:24
Average Pace	7:48/km
Average Moving Pace	7:38/km
Best Pace	2:05/km
Average Heart Rate	125 bpm
Max Heart Rate	174 bpm
Training Effect	Recovery / Low Aerobic
Aerobic Effect	2.3
Anaerobic Effect	1.9
Training Load	57
Impact Load Distance	4.62 km
Actual Distance	3.98 km
Average Cadence	151 spm
Max Cadence	245 spm
Average Stride Length	0.83 m
Vertical Oscillation	7.4 cm
Vertical Ratio	9.0%
Ground Contact Time	276 ms
Average Power	202 W
Average Temperature	29.0°C
Perceived Effort	2/10 Easy

The numbers show that this was not a hard run overall.

My average heart rate was 125 bpm, and my perceived effort was only 2 out of 10.

Garmin marked the workout as Recovery / Low Aerobic.

That matched how I wanted the run to feel.

Easy.

Controlled.

Not forced.

The Workout Structure

The run had three main parts.

Section	Time	Distance	Average Pace	Average Heart Rate
Warm-up	10:00	1.31 km	7:40/km	119 bpm
Main Running Section	18:02	2.41 km	7:28/km	129 bpm
Final Section	3:01	0.26 km	11:35/km	115 bpm
Total	31:04	3.98 km	7:48/km	125 bpm

There was also walking included in the session.

The running time was 22:45, and the walking time was 7:43.

That is important.

Yesterday was not about running continuously.

It was about adjusting.

When the weather felt too hot, walking was not failure.

Walking was part of managing the effort.

What I Learned About Running in the Heat

Running in the heat feels different.

A pace that normally feels easy can feel harder.
The body may feel heavier.
Breathing can feel different.
The same workout may require more caution.

That is why yesterday’s run became a useful lesson.

I did not need to prove that I could follow the plan perfectly.

I needed to finish the run wisely.

For me, running after 40 is not only about discipline.

It is also about judgment.

Some days, discipline means following the plan.

But other days, discipline means changing the plan before the body is pushed too far.

Yesterday was one of those days.

Why I Think This Was Still a Good Run

At first, not following the Garmin Coach plan can feel like I failed the workout.

But when I looked at the data, I did not feel that way.

I still went outside.
I still moved for about 30 minutes.
I kept the effort easy.
I stayed mostly in a controlled zone.
I listened to my body in hot weather.

That counts.

The goal of training is not to win every single workout.

The goal is to keep building fitness without breaking the body.

Especially after 40, that matters.

A good training plan should help me improve.

But it should not make me ignore obvious signals.

Heat is one of those signals.

Garmin Data Helped Me See the Run Differently

If I only looked at the pace, this run might not look impressive.

3.98 km in 31 minutes.

Average pace: 7:48/km.

That is not fast.

But Garmin data helped me see the purpose more clearly.

The average heart rate was low.
The training effect was Recovery / Low Aerobic.
The perceived effort was easy.
The body battery impact was small.
The run did not add too much stress.

That tells me this was not a wasted run.

It was a controlled recovery-style run in hot weather.

And that may have been exactly what I needed.

My Takeaway

Yesterday, I did not follow the Garmin Coach workout exactly.

It was too hot, and I chose to run by feel.

At first, that might sound like I ignored the plan.

But I think I made the right choice.

I still trained.

I still moved.

I still respected the plan in a broader sense, because the real goal is not just to complete workouts.

The real goal is to become a more consistent runner.

A healthier runner.

A smarter runner.

As a beginner runner after 40, I am learning that Garmin Coach is helpful, but my body still has a voice.

Yesterday, the watch gave me a plan.

The weather gave me a warning.

My body gave me feedback.

So I adjusted.

And sometimes, that is the best kind of training.

Related notes from my running journey after 40: