A little while back I found out I have a high capacity for muscle storage, and it turned out to matter for my climbing more than I expected. In this post I want to walk you through how high muscle storage capacity shapes my climbing training, at least the way it’s playing out for me so far.
Quick heads up before we get going. I’m a climber, not a physiologist, so treat the science here as my own reading plus my own experience on the wall, not the final word. I’ll flag the parts I’m still unsure about as we go.
What is muscle storage capacity?
As I understand it, muscle storage capacity is your muscles’ ability to store proteins and glycogen, the stuff they lean on for growth, repair, and energy when you’re working hard. I’m summarizing what I’ve read here, so take it as a climber’s plain-language version, not a textbook.
In simple terms, it points to how much your muscles can build up and how much energy they can hold onto through demanding effort. That feeds into both endurance and strength.
For a sport like climbing that seems like a big deal, because you need burst strength for hard moves and endurance to keep going on long routes or a full session. From what I can tell, a higher muscle storage capacity should help you throw for powerful moves and stay strong deeper into a climb.
It also seems to feed into how fast you recover and adapt, which matters a lot if you’re training often and slowly turning up the difficulty over time.
My initial measurements
During the first round of assessments for my climbing project (read more about that here), I measured a bunch of body composition stuff, including muscle storage capacity. If you want the very first numbers, I logged my starting weigh-in and benchmarks in this post.
The result stood out to me. My muscle storage capacity came in at a 5 on a scale where that’s considered high.
To me that suggested some built-in potential for muscle endurance and strength, which are exactly the traits I want for climbing. I’ll be honest though, this is a reading off a consumer scale, so I’m holding it loosely.
Learning about it, I was excited and a little curious. It might explain why I’ve picked up strength fairly quickly in the past when I trained consistently.
It also raised new questions for me. How do I actually train to make the most of this without burning out or skipping the endurance work I need so I don’t fade on long sessions?
How high muscle storage capacity shapes my climbing training
Here’s the honest version of how high muscle storage capacity shapes my climbing training day to day. Since I train only with on-the-wall drills, this trait tells me I can push each session for both power and endurance instead of treating them as separate blocks.
Knowing this, I try to plan drills that steadily build muscle and energy storage, so I can climb longer before I start to fade. That’s the theory anyway, and I’m testing it on myself.
Basically, while my levels are high, I’m spending more time on strength and endurance drills than on technique drills. With regular testing, I think I can flip that and lean into technique-heavy drills when my levels dip. The idea is to match my training to my body instead of fighting my body’s natural cycle.
Potential benefits
The upside I’m hoping for is more strength, since muscles that store and use more energy should let me pull harder through forceful moves and awkward positions.
The other one is endurance. On long sessions, muscles that run efficiently for longer should push back the moment where I get pumped and my climbing falls apart. Again, this is my expectation going in, and part of the point of tracking is to see if it holds up.
Possible challenges
There’s a flip side. The demand on recovery seems to be higher. Muscles that store and burn more energy also seem to need more time and fuel to repair and grow.
So I have to be more deliberate about recovery, which for me means real rest and probably more sleep.
Nutrition matters more too. I’m aiming for enough protein to repair and enough complex carbs to top the glycogen back up. I’m not going to pretend I’ve dialed this in perfectly, it’s a work in progress.
Adapting my training regimen
Once I knew about the high muscle storage capacity, I reworked my week to chase the benefits and soften the recovery cost. This whole experiment is part of seeing whether I can transform my climbing without weights or a hangboard, so I’m leaning hard on drills alone.
First move was more rest. I was climbing 4x per week and I’ve dropped to 3x, to give my muscles time to recover and actually adapt.
I also adjusted the intensity and length of my climbing drills, mixing high-intensity power moves with longer endurance routes.
The point of that mix is to hit both fast-twitch and slow-twitch fibers, which I think you need for well-rounded climbing.
Specific drills and routines
To target muscle and how it works on the wall, I’ve built a few climbing drills into my routine. If you want a structured way to actually run drills like these, the Grip & Grind app is where I do mine.
For power, I use short, intense bouldering sessions with dynamic moves that need a burst of strength. Dynos and Drop is one I use for explosive power. (I shared that one with my newsletter subscribers. Learn more about the newsletter here.)
For endurance, I do longer climbs with minimal rest to mimic the steady effort a hard route asks for. Up-Downs and 4x4s are great for this.
I also work drills that build lock-off strength, holding a bent-arm position to mimic reaching and holding far holds. That helps with endurance and control. The Lock-Off drill is one of my favorites for it.
These drills are meant to make the most of my natural leaning toward muscle storage and, hopefully, climb better overall.
Monitoring progress
To actually track changes in my muscle and my climbing, I’ve set up a tracking system I can stick to.
Monthly assessments that mix performance numbers with physical measurements are how I’ll chart progress.
I’m recording the difficulty and number of routes I can climb, along with any bumps in strength and endurance I notice while training.
This is the climbing training planner I use for all of my tracking.
That way I can see the numbers on muscle and also the softer stuff, like whether my actual climbing skills are getting better.
You can see my month 1 measurements and benchmarks here.
Tools and techniques for measuring body composition
For tracking body composition over time, I’m using a couple of tools.
A bioelectrical impedance analysis (BIA) scale is my regular check for body fat percentage and muscle mass. It’s also what gives me that estimated muscle storage capacity level. Fair warning, these scales aren’t lab-grade, so I trust the trend more than any single reading.
I also take body part measurements with a tape to track changes a bit more precisely.
Taken consistently, under similar conditions each time, these should give me a reliable picture of how my muscle storage capacity and body composition shift over the training year.
Expectations vs. reality
Going in, I figured a high muscle storage capacity would just let me climb harder, longer, and more often. Reality was messier than that.
What it really drove home was how much rest and recovery matter once you’re training at a higher level.
That shifted how I think about training. Quality and recovery are every bit as important as how many sessions I stack up. Sitting with the physical demands of high muscle storage has honestly reshaped what I expect and how I plan.
Surprises and new goals
The surprise was learning that muscle storage levels can change over time. I didn’t see that coming.
So now I’m taking a more flexible approach, adjusting my training based on where my muscle storage capacity actually sits each time I test.
A new goal came out of that. Not just to climb better, but to hold a good balance between strength, endurance, and recovery, so I keep making progress and stay healthy for the long haul.
That adaptive mindset is a real shift in how I train.
Advice for other climbers
If you want to explore your own muscle storage capacity, I’d start with a solid look at your body composition. This is exactly what I did at the start of my year-long climbing project.
Knowing your baseline gives you real insight into how your body handles climbing. Talk to a sports physiologist if you can, or use reliable-enough tools like a BIA scale or skinfold calipers to gauge muscle mass and fat percentage.
Even if your BIA scale isn’t perfectly accurate, you can still use it to track change. As long as you use the same tools the same way under similar conditions, you’ll get useful clarity.
From there you’ve got a foundation for building a training plan that actually fits how your body works.
Tailoring training based on body composition
Once you know your body composition, shape your climbing training around your strengths and weaknesses.
If you’ve got a high muscle storage capacity, build in enough recovery and enough good fuel to let that muscle perform and grow.
If your muscle storage runs lower, you might lean into endurance and technique to get the most out of your sessions.
Either way, retest now and then and adjust, so your training keeps matching your body as it changes.
Digging into how muscle storage capacity affects climbing has genuinely changed how I train.
Key takeaways
- The balance between training intensity and recovery is everything.
- Tailor your workouts to your own physiological strengths.
- Muscle storage capacity isn’t fixed, so retest and adjust your training as it shifts.
If you want short, practical climbing drills in your inbox, that’s exactly what my newsletter is for. It’s free, and each one takes about 15 minutes. Join the newsletter and level up your climbing with 15 minutes of training.
I’d love for you to follow along on this year-long journey as I get deeper into drill-driven climbing training and document every step.
Stick around to see how it reshapes my body and my technique, and maybe grab an idea or two for your own climbing.
For more detailed insights and updates, check out this article next:
Frequently asked questions
What is muscle storage capacity in simple terms?
The way I understand it, muscle storage capacity is your muscles’ ability to store proteins and glycogen, the fuel they use for growth, repair, and energy during hard effort. I’m not a physiologist, so I treat this as a plain-language summary rather than a clinical definition.
How did I measure my muscle storage capacity?
I used a bioelectrical impedance analysis (BIA) scale, which gave me an estimated muscle storage capacity level along with body fat and muscle mass readings. Mine came in at a 5, which is considered high on that scale. These scales aren’t lab-grade, so I trust the trend over any single number.
How does high muscle storage capacity change my climbing training?
While my levels are high, I spend more time on strength and endurance drills and less on technique, and I’ve added rest days by dropping from four climbing sessions a week to three. When my levels dip, I plan to shift toward more technique work. The whole idea is matching training to my body instead of fighting its natural cycle.
Does high muscle storage capacity mean I can just train more?
That’s what I assumed at first, but for me it was the opposite. Muscles that store and use more energy seem to need more recovery, so quality and rest ended up mattering as much as how many sessions I stacked up.
Do I need weights or a hangboard for this kind of training?
I don’t use either. My whole project is built on on-the-wall drills, mixing power moves like Dynos and Drop with endurance work like Up-Downs and 4x4s and lock-off holds. I run my drills through the Grip & Grind app, but you can structure them however works for you.
