Why feeling bad doesn’t mean your training is broken
If you train consistently and with intent—whether for triathlon, HYROX, running, or any endurance-based sport—you will eventually notice a pattern that catches almost everyone off guard the first few times it happens.
Some days feel great.
Some days feel… fine.
And some days feel awful.
This isn’t a sign that your program isn’t working. It’s not a lack of motivation. And it’s definitely not failure.
It’s what many coaches and athletes refer to as the rule of thirds.
What is the rule of thirds?
The rule of thirds is a simple but powerful observation:
~⅓ of your training sessions feel good. You feel strong, coordinated, and confident. Paces feel manageable. Workouts flow.
~⅓ feel average. Nothing is wrong, nothing is great. You get the work done without much drama.
~⅓ feel lousy Legs feel heavy. Paces feel harder than they should. Motivation dips. Everything feels slightly off.
If you’re training with enough volume and intensity to improve, this distribution is normal.
An important clarification
This does not mean that every week breaks down neatly into thirds.
In reality, it often looks more like:
A week or two where everything clicks, followed by several days (or a full week) where sessions feel flat or heavy Then a return to “normal” or good sensations again
Training stress accumulates. Recovery isn’t linear. Adaptation happens in the background—not on your watch face.
Why this matters (especially in winter)
In winter, motivation is already under pressure:
Shorter days
Worse weather
Less external stimulation from races or group sessions
When a workout feels bad in this context, it’s easy to assign meaning to it:
“I’m losing fitness.”
“Something is wrong.”
“Maybe I should change everything.”
Most of the time, that reaction causes more harm than the bad session itself.
How to navigate the “lousy third”
The goal is not to force every session to feel good. The goal is to stay consistent despite fluctuating sensations.
Practical guidelines:
Respect the session intent, but be flexible with execution
If threshold feels like threshold+ on the day, back it off slightly.
Adjust intensity before volume Keep the structure, lower the effort.
Avoid emotional decision-making
One bad session is not a trend.
Zoom out – Fitness is measured over weeks and months, not workouts.
Most importantly:
A bad-feeling session that you complete calmly and intelligently is often more valuable than a “hero” workout when you feel amazing.
The paradox
Here’s the irony most athletes eventually learn:
If every session feels good, you’re probably not training hard enough.
If everything feels terrible for weeks on end, you’re probably doing too much.
Progress lives in between.
Final thought
Training is not about chasing good feelings—it’s about trusting the process when feelings fluctuate.
Accept the rule of thirds.
Detach emotion from daily performance.
Stay consistent.
The adaptations are happening whether today felt great or not.
