A recent paper in the Journal of Bone and Mineral Research found that increased bone mineral content (BMC) and bone mineral density (BMD) in childhood are positively associated with time spent doing high-impact physical activities (PA), even for those with a genetic risk of low bone mass in adulthood (1).
A concern over BMC and BMD generally arises in those over 60 years old, when low bone mass and osteoporosis can occur. However, the time of maximal bone mineral… Continue Reading
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October 10, 2016
What’s holding you back, and why do you let it?
The legless man in the wheelchair made a very strong point without saying anything.
On the way to the gym for a workout, I was bemoaning my situation and wishing I didn’t have to do a 5-kilometer run. My inner monologue alternated between bitching about my tight left hip and outlining the reasons I prefer power to endurance.
You know the drill. I longed for… Continue Reading
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In Classic
October 03, 2016
Affiliate owner Chris Sinagoga talks about two articles and three videos that made him a better trainer.

When you first watched “The Shawshank Redemption,” the ending probably left you wondering how Andy Dufresne bested the warden and his crew.
Because you wanted to relive that excitement, and because Morgan Freeman’s voice brings serenity to life, you watched the movie several more times.
Then a… Continue Reading
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In Kids
September 27, 2016
Peter Driscoll is a CrossFit Level 1 trainer and a physical-education teacher at Hartland Elementary School in Hartland, Vermont. He’s also the founder of HES CrossFit, which operates out of a transformed kindergarten classroom in the school. The affiliate is helping the school’s K-8 students gain strength and confidence through the integration of CrossFit into their daily lives.
Driscoll explains that when he brought research to principal Jeff Moreno “that… Continue Reading
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In HD Videos
August 26, 2016
CrossFit Founder and CEO Greg Glassman visits a Level 1 Certificate Course at CrossFit Silicon Valley to talk about how CrossFit is at the forefront of a revolutionary fight against the leading cause of death in the United States.
Chronic disease—including obesity, Type 2 diabetes, heart disease, stroke and cancer—accounts for 70 percent of the deaths in the United States every year, Glassman explains.
“Medicine has no answer,” he says. “You do.”
The answer is CrossFit, which… Continue Reading
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In Affiliation
July 17, 2016
Reebok CrossFit Officine opened its doors only three years ago. Now, with more than 500 members, Officine is at the forefront of the fitness movement in Milan, Italy.
“We’re proud that in three years we’ve grown as a family so much,” says head coach Peter de Sury.
There are now more than 65 affiliates in the greater Milan area, and with Officine holding at least one Level 1 Certificate Course and one Level 2 Certificate Course per month, that… Continue Reading
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In Affiliation, CrossFit
June 03, 2016
Undefeated in litigation, CF-RRG continues to defend the CrossFit community and improve service to policyholders.
Since 2009, CrossFit Risk Retention Group (CF-RRG) has stood behind affiliates and trainers.
A community-owned insurance company, CF-RRG provides all insurance requirements in affiliate licensing agreements and fulfills CrossFit Kids requirements. CF-RRG also provides personal-trainer policies for independent Level 1 CrossFit Certificate holders.
Last year was very strong, and 2016 has already brought notable successes… Continue Reading
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When a pegboard showed up in Event 12 of the 2015 Reebok CrossFit Games, a lot of people were shocked.
That’s a weird reaction by any follower of a sport in which competitors sign up to face the “unknown and unknowable,” but it’s even weirder when you consider CrossFit’s Founder and CEO wrote about pegboards back in 2002.
In the second issue of the CrossFit Journal, Greg Glassman listed and sourced all the equipment a person would need to turn a garage into a “world-class strength and conditioning facility.” The article, … Continue Reading
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In Coaching
May 16, 2016
CrossFit coaches share their favorite warm-up games to get athletes laughing and moving.
“High knees, lunges and PVC pass-throughs!”
While lunging her way across the room for what feels like the millionth time, an athlete steals a jealous glance at the wildly giggling CrossFit Kids who are playing a tic-tac-toe racing game in the next room.
At CrossFit Leverage, warm-up games aren’t just for kids.
“All of our members have got real jobs and… Continue Reading
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In CFJ and Monthly Collections
March 31, 2016
The individual PDF articles published in March 2016 are collected here in a single download.
The video and audio posts are not contained in the PDF.
The articles included here are:
“Soda, Death and Taxes” - Saline
“The CrossFit Kitchen: Creamy Shrimp Zucchini” - Massie
“When the Skip Hits the Fan” - Warkentin
“Do It Till You’re Dead” - Bunch
“With a Grain of Salt” - Cecil
“Prescribe What to Whom—and Why?” - Berger
“A Deft Dose of Volume” - Hobart
“For Whom the ’Bells Toll” - Cecil
“Strength and Conditions” - Beers
“Candy Kids” - Achauer
“The Sugary Albatross” - Saline
“The… Continue Reading
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Your ego has cursed you. Break the spell in three steps.
“There is a compelling tendency among novices
to quickly move past the fundamentals.” —Greg Glassman, CrossFit Founder and CEO
Read that quote twice. Maybe three times.
Now admit that you—yes, you—are afflicted by the novice’s curse.
Far more powerful than the Madden Curse combined with the Curse of the Hope Diamond, the novice’s curse is utterly indiscriminate: It affects 99 percent… Continue Reading
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In Affiliation, HD Videos, Medical/Injuries
December 26, 2015
The 2015 Working Wounded Games were held Nov. 7-8 at CrossFit Lorton in Lorton, Virginia. An annual fitness competition, the event brings together wounded veterans, permanently injured people and adaptive athletes. This year, 63 competitors from the U.S., Canada, Chile and Brazil came to CrossFit Lorton to test their mettle.
Amanda Kloo, an athlete from CrossFit 77, has cerebral palsy and competed for the first time this year.
“I started all this because I wanted to learn… Continue Reading
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In Competition, Kids
November 30, 2015
CrossFit Kids trainers say early sport specialization can have negative consequences on young children, especially when winning is placed above the joy of movement.
When my daughter, Rosemary, lost interest in soccer at age 8, I signed her up for the swim team. Whenever I asked her about competing in a swim meet, she said she wasn’t interested. Then, when she was almost 10, she tried out for Junior Lifeguards and came in first of all… Continue Reading
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The “CrossFit Kids Startup Curriculum” is to be used in conjunction with the information provided at the CrossFit Kids Trainer Course. The document contains two months of programming for each age group. While the “Training Guide” directly supports the CrossFit Kids Trainer Course and program, the goal of the “CrossFit Kids Startup Curriculum” is to provide programming that allows trainers to more easily start a new program or… Continue Reading
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In Affiliation, Kids
September 20, 2015
Four CrossFit affiliates share their strategies for keeping kids safe and minimizing the logistical headaches of gym-based child care.
Tacheena Rubio drives a long way to work out. There are CrossFit gyms closer to Rubio’s house, but she makes the hour-long commute to CrossFit Wilmington in North Carolina because the affiliate offers something others don’t: child care. Rubio has three girls, ages 1, 8 and 13.
“The main reason for choosing this gym… Continue Reading
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In ExPhysiology, Kids
March 24, 2015
Kelly and Juliet Starrett work to prevent poor movement by supplying kids with stand-up desks at school.
In the spring of 2013, Kelly Starrett and his wife, Juliet, volunteered to help out at their daughter’s elementary-school field day in Marin County, California. The experience was eye-opening.
Far too many kids seemed to be physically compromised. They saw kids who couldn’t get themselves into burlap sacks for the sack races… Continue Reading
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March 18, 2015
In this three-part series, get to know Coach Mike Burgener, who runs the CrossFit Weightlifting Trainer Course and coached the American Women’s Junior National Team for about a decade beginning in the mid-’90s. He’s also the man behind Mike’s Gym, a two-car garage in Bonsall, California, that serves as a USA Weightlifting Regional Training Center.
In the final episode, we learn how Burgener’s now-famous garage gym… Continue Reading
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In Affiliation, HD Videos
February 13, 2015
For most of her marriage, Veronica Ledesma has taken care of her four kids and her husband Marcelo Elizaga, who played professional soccer for years.
But after discovering CrossFit and opening CrossFit Iron Tigers in Buenos Aires, Argentina, she wants you to know one thing: “Here, the boss is me.”
Ledesma started CrossFit to lose weight after having her fourth child. Soon, weight loss became secondary to her passion for sharing CrossFit with others.
When… Continue Reading
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Randal D. Simmons was killed in the line of duty on Feb. 7, 2008. The 51-year-old was a 27-year veteran of the Los Angeles Police Department and a member of the SWAT team.
In addition to his service as an officer, Simmons often dedicated his free time to community outreach for at-risk and underprivileged youth.
“By the time that (Simmons) passed, he had mentored and ministered to over 1,000 kids,” says Simmons’ wife, Lisa.
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In HD Videos
January 04, 2015
With the encouragement of co-worker and CrossFit coach Meredith Davis, 18 Cannon School educators in Concord, North Carolina, started training at CrossFit Vitality. In this nine-part series, these teachers and administrators go through CrossFit fundamentals and try to determine the cognitive impact of the program.
After four months, the Cannon School staff members who remain committed to health and fitness reflect on their experience with… Continue Reading
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