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A Hard Workout Does Not Sap but Boosts Willpower

June 12, 2017 Dom 13 Comments

How does exercise intensity influence cognitive control?

In a new experimental study (Peruyero et al., 2017), participants were assigned to one of three groups: no exercise, light-intensity exercise, or high-intensity exercise. Their inhibitory control was tested before and after the workout. The results: People who had just exercised intensely did better at the cognitive test than those who had exercised lightly, while those who had not exercised at all performed the worst.

This drives yet another nail into the coffin of the willpower depletion theory. Doing things that are hard does not deplete willpower, but strengthens our will! And even though there is more to willpower than Stroop-tested inhibitory cognitive control, it is a major executive function and thus a critical self-control skill.

Still, we must be intelligent about our training and not destroy ourselves. The exercise used in the study was a 30-minute Zumba workout, which I doubt is as exhausting as a powerlifting, kickboxing, or grappling session. And while intense exercise can well boost cognitive performance, another study (Schmit et al., 2015) found that this effect reverses near exhaustion.

To optimize our willpower, we may be well-advised to work out hard for a relatively short period. Personally, I have learned that keeping my weightlifting sessions under 45 minutes makes me much more energetic and focused during the rest of the day—so much more than the 60-90-minute workouts I did when I was younger. And when I train jiu-jitsu, which can be severely fatiguing, I simply meditate and go to sleep afterwards.

The other problem I see with using exercise and particularly strength workouts for boosting willpower is that most people are caffeine addicts. Intense, aggressive workouts come easy when the body is supercharged with stimulants (coffee, energy drink, caffeine pill, or pre-workout booster). But the drug-fueled power of will soon collapses into a drug-induced weakness. Energy highs never come for free; they are always borrowed from the future. No wonder that those animals overflowing with energy in the gym often seem tried and weak when you meet them outside.

I was like that myself until I stopped fueling my workouts with caffeine. Now I am convinced that the best way to maximize my willpower throughout the day is to use my natural energy levels to unleash brute bursts of morning aggression at the gym without overextending the time I spend there and without borrowing energy from the afternoon.

hard workout willpower
The front squat: my favorite squat variation.

The Studies

Schmit C, Davranche K, Easthope CS, Colson SS, Brisswalter J, Radel R (2015). Pushing to the limits: the dynamics of cognitive control during exhausting exercise. Neuropsychologia 68, pp. 71-81, doi: 10.1016/j.neuropsychologia.2015.01.006.

Peruyero F, Zapata J, Pastor D, Cervelló E (2017). The Acute Effects of Exercise Intensity on Inhibitory Cognitive Control in Adolescents. Frontiers in Psychology 8(921), doi: 10.3389/fpsyg.2017.00921.

Further Reading

  • Willpower Condensed: Master Self-Discipline to Do Your True Will
  • Improve Your Focus While Lifting Weights with This Tip
  • How to Spot Overtraining Before It’s Too Late
  • Why I No Longer Listen to Music While I Work Out
  • Why You Should Meditate After Training
  • Should You Listen to Your Body?
  • Can We Build Willpower like a Muscle?
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Blog discipline, moderation, psychology, strength, willpower

Comments

  1. Legion says

    June 12, 2017 at 6:30 pm

    There are so many books based on ego-depletion theory.. well they were wrong 😉
    Great article, I experienced the same thing in regards to willpower and workouts, good to see that my anecdotal experience has been reaffirmed.
    Best regards, Legion

    Reply
    • Dom says

      June 13, 2017 at 3:42 pm

      To be fair, we cannot really say they were wrong. Even my coffin metaphor is misleading. As I am just reading in yet another new paper on ego-depletion, the main problem of the entire scientific field is that self-control is such an ill-defined concept that we do not even know which of the typically cited studies actually investigated ego-depletion. It is still unclear how we can objectively test self-control. With attention tests, working memory tests, Stroop tests, mental arithmetic tests, self-monitoring tests, classical temptation tests, balancing tests, physical endurance tests,…?

      In my opinion, self-control depends on cognitive, volitional, and physical strength, which is a scientifically useless point, but practically important: because in everyday reality, attitude far outweighs factual knowledge—and attitude is more strongly influenced by anecdotal experience than scientific evidence.

      Reply

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The Author

Dom is a European man keenly devoted to the gods of sylvan wisdom. He is also a cognitive scientist and philosopher by training, a data scientist by trade, and a strength athlete and martial artist at heart. [Read more…]

Willpower Condensed

Resources for Personal Growth

Key Definitions

1. A man’s True Will is what he would want to do if he had perfect knowledge of himself.

2. Mindcoolness is, positively, gratitude for one’s own and other people’s will; negatively, absence of rumination and worry.

3. Freedom is the degree to which a man does what he truly wants with a cool mind.

4. Rationality is the most effective way for a man to grow free and do his True Will.

Esto Voluntas Vera
Let There Be True Will

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