Be the one who knows what to do in the first two minutes

Quick answer: Take a CPR/AED and first aid class this semester. The American Red Cross, the American Heart Association, your local fire department and the YMCA all run them, and you can find one near you in about five minutes. Pick a class where you practice on a manikin. Skip anything that's only a video.

The two minutes nobody plans for

Picture a family cookout. Your uncle goes quiet mid-sentence and slumps in his chair. Eleven people are standing there. Every one of them is waiting for somebody else to know what to do.

That pause is the real danger. Ambulances are fast, but they aren't instant, and the minutes before they arrive belong to whoever's standing closest. If that's you, you have two choices: freeze like everybody else, or act.

You can't act on knowledge you don't have. That's the whole case for a class. It isn't about being a hero. It's about not being useless on the worst day of somebody's life.

What you'll actually learn

A good first aid and CPR class covers more than chest compressions. Expect to practice:

• CPR on adults, kids and infants. The technique changes with size, and you'll feel the difference on the manikins.
• Using an AED. That's the defibrillator box mounted on the wall at your school, gym and church. It talks you through every step. A class takes the fear out of opening one.
• Choking. What to do for an adult, and what's different for a baby.
• Bleeding. Firm, direct pressure, held longer than feels comfortable.
• Everyday stuff. Burns, sprains, bee stings, a kid who hit his head at practice.

The core of adult CPR is simple. If someone collapses, won't respond and isn't breathing normally, you tell somebody to call 911 (or you call yourself), then push hard and fast on the center of the chest. The pace is 100 to 120 compressions a minute, and the depth for an adult is about two inches. Your instructor will have you count it out loud until it sticks.

Two things the instructions leave out. First, it's exhausting. Two minutes of real compressions will cook your arms, which is why the class teaches you to trade off with someone else. Second, it can break ribs. Instructors will tell you straight: that happens, ribs heal, and a person who didn't get compressions might not. You don't have to be gentle. You have to be right.

Where to take one

Start with the biggest names, because their cards are recognized almost everywhere.

• American Red Cross. Use the "find a class" tool on redcross.org. They offer adult and pediatric first aid, CPR and AED courses, plus a babysitting and child care course that suits guys with younger siblings or neighbors.
• American Heart Association. The CPR course finder at heart.org lists classes through local training centers.
• Your fire department or EMS. Many run community classes, and some are free or cheap. Call the non-emergency number and ask.
• The YMCA, local hospitals and community colleges. Check their community education pages.
• Your school. Ask the school nurse, your coach or the athletic director. Plenty of schools bring trainers in, and if yours doesn't, you've just given somebody a good idea.
• Scouts. If you're in a troop, first aid is already part of the road to the higher ranks. Take it seriously instead of rushing it.

A related course worth knowing about is Stop the Bleed, which teaches how to control severe bleeding. Ask your local hospital or fire department whether one's coming up.

How to pick a class that counts

Ask four questions before you sign up.

1. Is it hands-on? You want to kneel on the floor and push on a manikin with an instructor watching your hands. Many programs offer a blended format: online lessons first, then a short in-person skills session. That's fine. An online-only certificate with no hands-on practice isn't the same thing, and employers who require CPR often won't accept it.
2. Does it cover AEDs and kids? It should.
3. Do I get a card? Most cards are good for two years, so put the expiration date in your phone and renew before it runs out.
4. Is there an age limit or a youth rate? Rules vary by provider and location. Call and ask.

Cost varies, so check the listing. If money's tight, the fire department route is worth a call first.

You'll need a parent's help to register and probably a ride. Don't make it a project in secret. Tell them you want to do this. Most parents hear "I want to learn CPR" and quietly decide their kid is turning out fine.

It opens doors, too

This isn't only about emergencies. Lifeguards need current certification. So do a lot of camp counselors, coaches' assistants and rec-league referees. A card in your wallet puts you ahead of other guys applying for the same summer job, and it tells an employer something about you before you say a word.

It also fits something we've written about before: reliable men are built at fifteen, not at thirty. Reliability isn't a mood. It's a pile of small things you got ready for before anybody asked. If you want to start building that pile, this week is a fine place to begin.

The class will feel a little awkward

You'll be kneeling on a carpet in front of strangers, counting out loud and pressing on a plastic torso. Somebody's going to crack a joke. Let them. Be the guy who still gets his hands in the right spot.

Ask your instructor how Good Samaritan laws work in your state. Most states have them, and they're designed to protect people who step in to help in good faith. The instructor will know the local specifics better than any article can.

If you ever have to use it

Check that the scene is safe. Call 911 or point at one person and tell them to do it. Say "you, call 911" instead of "somebody." Then do what you practiced, and keep going until trained help takes over.

Afterward, tell an adult you trust: a parent, a coach, a teacher or a youth leader. Doing something hard can leave you shaky, and it's normal to need to talk it through. Saying so isn't weakness. It's what steady guys do.

Book the class. Put the date on the calendar. Then go be the one who knows.