By BK, Athletic Hitting Development
Complete Hitters Are Built… It’s Earned!
Key takeaways
- In 18 college players, 10 days of breathing training cut cognitive anxiety from 23.6 to 20.1 and raised a batting score from 9.8 to 19.8.
- Small sample, college hitters, a test score, not game stats. Promising, not proof.
- Practice paced breathing daily, not only when nervous.
- Build one breath into the on-deck and in-box routine.
Your hitter’s breath might be the most under-trained part of his swing.
Paced breathing is a trainable skill that can calm a hitter’s mind and help him stay athletic at the plate. Practice slow, even breathing daily, then use one breath on deck, one stepping in and one after a bad pitch.
Train it: Mental Approach Masterclass →A small college study backs that up.
1. What the breathing study found
A 2025 study took 18 college baseball players in Taiwan and randomly split them into two groups. One group did heart rate variability (HRV) biofeedback training for 10 days. In plain English: slow, paced breathing with a monitor showing them how their body responded. The other group didn’t.
After 10 days, the breathing group’s cognitive anxiety, the worry and racing thoughts, dropped from 23.6 to 20.1. Their batting score on the study’s test went from 9.8 to 19.8. Both changes were statistically significant. The control group didn’t change.
That batting score roughly doubled. I’ll be honest about what that is and isn’t. It’s 18 players. That’s a small sample. It’s college hitters, not 14-year-olds. And it’s a batting score from the study’s test, not a season of game stats. So don’t promise a parent that breathing doubles a batting average. It doesn’t say that.
What it does say is worth your attention: a short, daily, trainable skill moved both the mind and the bat in the same direction.
2. Why breathing belongs in the Mental Approach
The Mental Approach is one of the 4 Pillars of a Complete Hitter. Most hitters treat it like weather: some days you have it, some days you don’t. Wrong. It can be trained like a swing.
Here’s why it matters at the plate. When anxiety climbs, hitters get tight. Tight hitters lose the athletic position, and losing the athletic position is the #1 swing flaw. Start athletic. Stay athletic. Finish athletic. A racing mind also hurts the Hitting Processor. You can’t see it, recognize it and time it when your head is somewhere else.
Calm isn’t soft. Calm is how you stay athletic.
PRACTICE IT CALM. USE IT LOUD.
BREATHETO HIT.
- Slow breath in through the nose.
- Longer, slower breath out.
- Same rhythm every day.
- Same cue on deck and in the box.
A ROUTINE YOU ONLY USE WHEN NERVOUS ISN’T A ROUTINE.
3. The AHD breathing routine
The key word in the study is training. They practiced it for 10 days straight. That’s the lesson: practice it daily, not only when you’re nervous. A tool you pull out for the first time in a big at-bat won’t be there for you.
- Daily practice.A few quiet minutes every day, at home. Slow breath in through the nose, longer and slower breath out. Same rhythm each time. If you have a heart rate app, use it. If not, just keep it slow and even.
- Practice day.Use one or two breaths before every round in the cage. Make it automatic before it ever matters.
- On deck.One slow breath while you time the pitcher. Then your plan: heater zone, hunt your pitch.
- In the box.One breath as you step in, then your setup. Feel your posture, hip hinge, ready to hit. Then eyes to the pitcher.
- After a bad pitch.Step out, one breath, reset the plan. Next pitch.
Keep it simple. One breath, one cue, same every time. The routine is the point.
4. For parents
Don’t wait for the big game to tell your kid to “just relax.” That never works. Help them practice breathing at home when nothing is on the line. Before bed works. In the car on the way to practice works.
And don’t oversell it. Breathing won’t fix a swing that has a mechanical breakdown. It helps a hitter use the swing he already has. If you aren’t sure which pillar is holding your hitter back, the free SwingChecker™ takes about 3 minutes and points to the first priority.
5. For coaches
Build it into team practice. Thirty seconds at the start of practice, the whole team breathing together. Then make one breath part of every hitter’s on-deck and in-box routine. When a hitter loses control of an at-bat, the first question isn’t mechanics. It’s “Did you take your breath?” For more on team-wide mental work, see our guide to coaching the mental game.
Where MAA fits. Breathing protects the swing you’ve built. A tense hitter stands up out of his setup, loses the hip hinge and spine tilt, and rushes the back-elbow load. Calm body, same Mechanically Advantaged Angles (MAA) in the game that he owns in the cage.
Quick answers
Does breathing help hitters?
In one study of 18 college baseball players, 10 days of paced-breathing biofeedback training lowered cognitive anxiety and raised a batting test score, while controls didn’t change. It’s a small study, but it’s a promising, low-cost tool.
When should a hitter use a breathing routine?
Practice it daily at home and in practice, then use one breath on deck, one when stepping in the box and one after a bad pitch.
Will breathing training help younger hitters?
The study was on college players. In my coaching judgment a simple breathing routine is safe and useful for teen hitters, but the study doesn’t prove the same results for them.
Do I need a heart rate monitor?
The study used HRV biofeedback. A heart rate app can help, but the habit of slow, even, daily breathing is the part every hitter can start today.
Why doesn’t telling my kid to “just relax” work?
Because relaxing is a skill, and nobody can pull out a skill for the first time in a big at-bat. Have your hitter practice slow breathing at home when nothing is on the line, like before bed or on the drive to practice, so it’s there when it counts.
Research: Su YT et al., “The Impact of Heart Rate Variability Biofeedback on Anxiety Reduction and Batting Performance Enhancement in Taiwan University Baseball Players,” Journal of Functional Morphology and Kinesiology (2025). Small randomized study (18 college players, 10 days) using a batting test score rather than game stats, summarized here from the abstract.
Don’t collect drills. Build a complete hitter.
Complete Hitters Are Built… It’s Earned!
This article is part of the AHD guide The Mental Game of Hitting. Start there for the full picture and every related article.
