Grit isn't a personality trait — it's a capacity. Physical and mental. We measure it, we train it, and we build athletes who can access their skills when pressure is highest.
Pressure doesn't break your skills.
It cuts off access to them.
When stress rises, CO₂ tolerance is overwhelmed. Breathing becomes fast and shallow. The nervous system shifts into survival mode.
In that state, the athlete disappears — replaced by a physiological reaction that has never been trained.
Here's what most people miss: grit isn't just mental — it's physical, and it's trainable. We measure it. We train it. The result: athletes built for pressure.
Three steps. Two capacities — physical and mental. One outcome: skill that holds under pressure.
BOLT and MBT tests give you a precise baseline. Daily compliance and consistency turn it into a habit. You cannot improve what you cannot measure.
Breathing protocols raise your stress ceiling. Focus and composure drills build the habits that hold under pressure. Two capacities. One system.
Composure holds. Decisions stay sharp. Skills remain accessible. The athlete who shows up in practice shows up when it counts.
What determines the outcome is whether the body has been trained to handle pressure.
Athletes lose access to their skills under pressure because stress capacity has never been trained. CO₂ Tactics is the first structured system to address this — measurably.
James reached the majors as a center fielder with the Seattle Mariners, part of fifteen professional seasons that also took him through the Los Angeles Dodgers organization. An outfielder's career is long stretches of stillness broken by moments that demand everything at once — that gap between waiting and executing is where pressure does its damage.
Matt pitched in the majors for the Dodgers, Reds, Twins, and Mariners over a fifteen-season professional career — every outing a chain of isolated, fully exposed decisions on the mound. He knows from the inside what separates how an arm works in the bullpen from how it works with the game on the line.
Once a month, live. One focus, worked through real member data.
Members submit their data ahead of time. We pick the reads that show the month's focus best, put them on the screen, and coach them in front of everyone. You learn as much from someone else's numbers as from your own.
Included with The System · $99/mo
The app runs your daily protocol, scores what you build, and keeps Matt and James one tap away. This is what opens after your trial starts.



The System trains and reads you. Private is just us. The Flagship puts us in your building.
Train daily. Get read monthly. The app builds capacity between sessions — then once a month we put member numbers on the screen and coach what they're saying.
Under 18 — a parent or guardian reviews and signs first, from their own email.
Training starts at 14. If you’re younger, have a parent or guardian reach out to us directly at info@co2tactics.com.
Seasons are long — commit like one. Or take the free assessment first.
Everything in the app — plus a monthly family session with James or Matt, and a direct line between calls.
Nothing to pay today — billing starts after we meet.
Full roster on the system. Your staff on the coach console. Weekly director reports — and James and Matt in your building, running the system with your athletes in person.
Stress capacity is a measurable, trainable system — physical and mental. CO₂ tolerance, nervous system regulation, focus, and emotional control are all variables we can baseline, train, and improve.
What athletes, parents, coaches, and directors ask us before they start.
Stress capacity is how much pressure your system can absorb before it flips into survival mode — fast, shallow breathing, a racing heart, narrowed thinking. When that happens, your trained skill is still in there. You just can't get to it. We measure that capacity with BOLT and MBT tests, give you a number, and train the number up so you keep access to your skill when the moment is biggest.
Neither. Breathing apps train a technique. Mental performance trains a mindset. We train stress capacity — the physical and mental system that decides whether your skill shows up under pressure. Most people call that grit and treat it like a personality trait. We treat it like a capacity: it has a baseline, it has a number, and it moves when you train it. Physical and mental, built together, measured every day. That's what makes it a different category, not a different label.
Wake up, run your morning test, log the number, then complete a short prescribed session. Call it about ten minutes. The app tells you exactly what to do each day — no guessing, no equipment, no extra gear. Consistency beats volume here. Show up daily and your score moves.
You'll see it in the numbers first. Your BOLT and MBT scores and your Pressure Capacity Score trend in the app, so you're never guessing whether it's working. Stay consistent and the trend moves within the first few weeks. Then you start noticing it where it counts — the reset you can actually pull off when the game is on the line.
Pressure doesn't care what sport you play. A 3-2 count, a free throw, a penalty kick, a start line, a match point — the physiology underneath is the same, and so is the fix. The founders come from baseball, but the system trains the engine every athlete runs on.
Yes. Every protocol is scaled to your athlete's own test scores, not a fixed standard, and the app has built-in guardrails before any session starts. Training begins at 14. If your athlete is younger, reach out to us directly at info@co2tactics.com and we'll talk it through with you.
Built for it. When an athlete under 18 signs up, we collect a parent or guardian's name and email first. You're in the loop from day one. With Private, you also get a monthly family session and a direct line to James or Matt between calls.
The System is $99/month after a free 7-day trial, or $999 for the year. Private is $399/month per athlete ($599 for two) and adds a monthly family session with a founder. Both cancel anytime. The Flagship is built for teams and organizations and scoped per roster — request a slot and we'll build it with you.
It sits underneath everything you already do. Ten minutes a day, on the athlete's own time, with no practice time lost. On the Flagship, your staff gets the coach console so you can see who's testing, who's trending, and who's drifting — before it shows up on the field.
On the Flagship, yes — the whole roster on one console, every athlete's trend line in front of you. Individual System members own their own data. Private families watch their athlete's trends live in the monthly session.
We onboard your full roster, put your staff on the coach console, and send you a weekly director report with the roster table. You get monthly staff calls, a direct line to James and Matt, and in-person visits — the founders in your building, running the system with your athletes. Request a slot and we'll build the plan around your calendar.
That's the point of the whole system. Every athlete carries a number. The weekly report shows you who's building capacity and who isn't, roster-wide, in one table. You get to put a trend line next to your season — not a feeling.
Take the free assessment and get your baseline. If you're an athlete, start the 7-day trial. If you're a parent, book the Private intro call. If you run a roster, request a Flagship slot. One method, three doors — pick yours.
Start with a free CO₂ tolerance assessment. Discover your baseline.