The Volume Knob Principle

When I returned from my family vacation on July 30, 2026, I stepped on the scale and saw 236 pounds.

At sixty-four, that put me twenty-six pounds above my goal of 210 and six pounds above a barrier I hadn’t managed to penetrate since 2019.

This called for action.

Unfortunately, my preferred response to a problem is sometimes to attack it with a flamethrower.

Within four days, I dropped to 230. Much of that was undoubtedly vacation water weight, but I was encouraged. The campaign had begun. I would eat properly, train hard, and finally break through the 230 barrier.

Then I made the mistake of confusing enthusiasm with wisdom.

I exercised every day for eleven consecutive days. Some days I did sixty-eight minutes of kettlebell circuit training followed by an hour on my Schwinn Airdyne. The kettlebells weren’t particularly heavy, but I kept moving. Then came the bike, where exercise ceased to be exercise and became a hostage negotiation with the calorie counter.

My target was 700 calories.

Not 620.

Not 650.

Seven hundred.

I would climb onto the Airdyne and begin pedaling like a man attempting to power Southern California during a blackout. The fan roared. Sweat poured off me. My legs churned. I stared at the monitor as though the glowing digits were reporting my moral worth.

All this punishment produced a fascinating result.

I didn’t lose another pound.

After eleven days of dietary virtue and exercise fanaticism, I still weighed 230.

Then something worse happened.

On the eleventh day, I got on the Airdyne and my body resigned.

Normally I could grind my way toward 700 calories. This time I barely reached 300. My legs were empty. My energy vanished. It felt as though someone had opened a panel in my back and removed the battery.

Fine, I thought. I’m exhausted. I’ll rest.

I couldn’t.

I crawled into bed physically demolished yet strangely agitated. Instead of relaxation came anxiety. I tossed and turned, frightened by the depth of my exhaustion. For most of my life, exercise had been one of my great sources of bliss. Now it had entered the Fear Dungeon. I had pushed myself hard enough that the thing I associated with vitality suddenly seemed capable of hurting me.

I began wondering whether I had crossed some invisible line.

Then I thought of Arnold Schwarzenegger.

Arnold has inspired me since I was thirteen. Now in his late seventies, he reportedly still trains seven days a week for about ninety minutes: forty-five to sixty minutes of cycling followed by roughly thirty minutes of weights.

Seven days a week.

At nearly eighty.

I couldn’t survive eleven.

Was something wrong with me?

Then, during my next kettlebell workout in the garage, I had a revelation that should have occurred to me considerably earlier.

Arnold isn’t trying to kill Arnold.

The older Arnold isn’t reenacting Pumping Iron every morning. He’s not storming into the gym with Wagner blasting while attempting to punish every muscle fiber for the crime of aging. His workouts appear considerably more civilized. He rides his bike. He lifts. He talks to people. He jokes. A man of immense charisma, he holds court. For Arnold, the gym is partly exercise and partly social club.

Meanwhile, I’m alone in my garage behaving as though the Schwinn Airdyne knows where the bodies are buried.

The difference isn’t necessarily discipline.

It’s volume.

I began imagining my exercise program controlled by a giant amplifier knob.

Mine was turned to Eleven.

Nigel Tufnel would have approved.

Every workout had to be harder. Every bike session had to produce the magic number. Every day off looked suspiciously like weakness. If 600 calories was good, 700 was better. If four workouts were productive, eleven consecutive workouts must transform me into a Greek god sometime before Labor Day.

Except my body wasn’t becoming a Greek god.

It was filing a grievance.

That’s when I arrived at The Volume Knob Principle: sustainable fitness isn’t about turning effort as high as it will go. It’s about finding the highest setting from which your body can reliably recover.

For me, Eleven was not heroic.

Eleven was stupid.

So I’m turning the knob down to Seven.

I’ll continue my kettlebell circuits because I enjoy them. But I’ll allow myself a minute of rest when I need it. I’ll trim the workouts from sixty-eight minutes to about sixty-three and limit them to three days a week.

The Airdyne requires a more dramatic intervention.

Getting 700 calories in under an hour was beating me up. Doing it three or four times a week was beating me up with a folding chair after I was already on the ground.

So the bike goes down to twice a week.

And 700 loses its throne.

The new target is 600.

This sounds easy until you understand the psychology of the calorie counter. Once you’ve repeatedly produced 700, anything less starts feeling like moral decline. The machine reports 600 and some primitive voice says, Pathetic. You used to be somebody.

That voice needs to shut up.

Six hundred isn’t a failed 700.

Seven isn’t a failed Eleven.

A rest day isn’t evidence of decadence.

At sixty-four, perhaps the great fitness challenge isn’t learning how hard you can push yourself. I mastered that trick decades ago. The harder lesson is learning when pushing harder becomes indistinguishable from stupidity.

I can’t train exactly like Arnold.

I don’t need to.

I can steal the more useful lesson from the older Arnold: keep moving, keep lifting, keep showing up—but stop treating every workout like the beaches of Normandy.

Turn down the Volume Knob.

Eleven makes more noise.

Seven lets you keep playing.