How strength, power, and control fade faster than you think — and why it shows up late in your rides
As riding picks up, most mountain bikers do the same thing:
They stop lifting.
Not intentionally — it just… drifts.
Rides get longer. Weather improves. Life gets busy.
The gym quietly disappears.
And it feels fine at first.
But a few weeks later, something changes:
- You’re getting more tired on climbs
- Your body position starts to fall apart
- You feel less stable, less reactive on the bike
You’re getting more tired on climbs
Your body position starts to fall apart
You feel less stable, less reactive on the bike
And it’s not obvious why.
The Mistake Most Riders Make
Most riders think:
“I’ll maintain strength just from riding.”
You won’t.
Riding is incredibly specific — but it’s not enough to maintain the qualities that actually support performance:
- High force production
- Trunk stiffness and control
- Explosive strength
- Fatigue resistance under load
High force production
Trunk stiffness and control
Explosive strength
Fatigue resistance under load
And the tricky part?
👉 You don’t notice the drop immediately.
What Actually Decays (And How Fast)
Not all fitness qualities are equal.
Some stick around.
Some disappear fast.
Here’s what that looks like in real terms:
🧱 1RM Strength (Max Strength)
- Starts declining: ~2–3 weeks
- Noticeable drop: ~3–4 weeks
- Maintained with:1–2 sessions/week
Starts declining: ~2–3 weeks
Noticeable drop: ~3–4 weeks
Maintained with: 1–2 sessions/week
👉 This is your ability to produce force — critical for climbing and control.
⚡ Explosive Strength / Alactic Power
- Starts declining: ~7–10 days
- Noticeable drop: ~2–3 weeks
- Needs: regular exposure (even small doses)
Starts declining: ~7–10 days
Noticeable drop: ~2–3 weeks
Needs: regular exposure (even small doses)
👉 This affects:
- Quick accelerations
- Technical climbing
- Reactivity on trail
Quick accelerations
Technical climbing
Reactivity on trail
🔥 Anaerobic Endurance (Repeat Efforts)
- Starts declining: ~10–14 days
- Noticeable drop: ~2–3 weeks
Starts declining: ~10–14 days
Noticeable drop: ~2–3 weeks
👉 This shows up as:
- “I can do it once… but not again”
“I can do it once… but not again”
🫁 Aerobic Endurance (Zone 2 Base)
- Starts declining: ~2–3 weeks
- Slower decay than most people think
Starts declining: ~2–3 weeks
Slower decay than most people think
👉 Good news:
- Your riding is largely maintaining this
Your riding is largely maintaining this
🧠 Core Strength / Trunk Control
- Starts declining: ~2–3 weeks
- Often shows up as:Low back fatigueLoss of positionReduced force transfer
- Low back fatigue
- Loss of position
- Reduced force transfer
Starts declining: ~2–3 weeks
Often shows up as:
- Low back fatigue
- Loss of position
- Reduced force transfer
Low back fatigue
Loss of position
Reduced force transfer
👉 This is HUGE for MTB — and often overlooked
What This Looks Like On The Bike
This isn’t just about pedal strokes.
👉 Late in the ride:
- You can’t hold strong body position
- You collapse through your trunk
- Arms and shoulders fatigue faster
- You react slower to terrain
- You lose precision in technical sections
You can’t hold strong body position
You collapse through your trunk
Arms and shoulders fatigue faster
You react slower to terrain
You lose precision in technical sections
It’s not just fatigue.
It’s loss of structure and control.
What a Good Program Actually Does
In a great program, we’re not just picking exercises.
We’re managing qualities — and how fast they fade.
Because here’s the reality:
👉 Every physical quality you train has a different decay rate
👉 And if you ignore that, your training starts to drift
A simple way to think about it:
- Some qualities need to be trained often
- Some just need to be touched occasionally
- Some can sit in the background for weeks
Some qualities need to be trained often
Some just need to be touched occasionally
Some can sit in the background for weeks
A great program accounts for all of this
It doesn’t try to train everything, all the time.
- Maintains what sticks
- Prioritizes what fades quickly
- Times everything around your riding
Maintains what sticks
Prioritizes what fades quickly
Times everything around your riding
In-season, that usually looks like:
- Strength→ low dose, high importance
- Power / reactivity→ small, frequent exposures
- Aerobic work→ mostly handled by riding
- Mobility→ consistent background work
Strength → low dose, high importance
Power / reactivity → small, frequent exposures
Aerobic work → mostly handled by riding
Mobility → consistent background work
👉 Nothing is random
👉 Nothing is accidental
👉 Nothing is left to drift
So What’s The Fix? (Simple)
You don’t need more training.
You need to stop letting it drift.
The Sweet Spot: 2 Sessions Per Week
For most riders in-season:
2 strength sessions per week
- Maintains strength
- Supports riding
- Doesn’t create unnecessary fatigue
Maintains strength
Supports riding
Doesn’t create unnecessary fatigue
1 session per week
- Bare minimum
- Easy to drift below effective
Bare minimum
Easy to drift below effective
0 sessions
- Youwilllose strength
- You just won’t notice right away
You will lose strength
You just won’t notice right away
What Those Sessions Should Include
Keep it simple and effective:
- Squat pattern
- Hinge pattern
- Upper push + pull
- Trunk stability (anti-extension, anti-rotation)
Squat pattern
Hinge pattern
Upper push + pull
Trunk stability (anti-extension, anti-rotation)
👉 30–45 minutes
👉 No junk volume
👉 Focus on quality
Don’t Skip Mobility
If strength keeps you strong…
👉 mobility keeps you moving well
In-season, you likely need:
- Hips
- T-spine
- Ankles
T-spine
Ankles
Even 10–15 minutes makes a difference
The Real Takeaway
Most riders don’t lose fitness because they stop training.
They lose it because they stop training the right things at the right frequency.
Final Thought
You don’t need to train more in-season
You just need to stop cutting the thing that’s keeping you strong
Want Help Figuring Out What You Actually Need?
If you’re not sure what to keep in (or what to cut),
👉 start with my MTB Fitness Score — it’ll show you exactly where you’re limited.
I'll see you on the Trails,