What is CrossFit?
Crossfit is a fitness regime. It was created by Greg Glassman and Lauren Jenai. Greg Glassman and Lauren Jenai founded CrossFit, Inc. in 2000.
It is a combination of many different types of exercises including high-intensity interval training, Olympic weightlifting, plyometrics, powerlifting, gymnastics, girevoy sport, calisthenics, strongman, and other exercises.

Wow! That a long list. In simpler terms it is competitive sports mixed with physical exercise. Crossfit aims at strength and conditioning programs for individuals. A typical hour long crossfit class includes warm-up, a skill development segment, the high-intensity “workout of the day” (or WOD), and a period of individual or group stretching. Performance on each WOD is often scored and/or ranked to encourage competition and to track individual progress. Gyms use equipments such as barbells, dumbbells pull-up bars, jump ropes, kettlebells, medicine balls, plyo boxes, resistance bands, rowing machines, and various mats.

“CrossFit is not a specialized fitness program, but a deliberate attempt to optimize physical competence in each of 10 recognized fitness domains,” says founder Greg Glassman in the Foundations document. Those domains are cardiovascular and respiratory endurance, stamina, strength, flexibility, power, speed, coordination, agility, balance, and accuracy.

Data shows that crossfit is equally popular among men and women.

How to become a Crossfit trainer?
There are four training levels one must complete to become a certified CrossFit coach. However, not all CrossFit gyms require their coaches to have all four levels of training.

Level One (CF-L1) is the introduction level. In the second level, training goes deeper into the mechanics of the movements and how to be leaders and communicate with other students. In order to earn the Level Three certificate, a coach one must complete 1,500 hours of active fitness coaching and become CPR certified. To earn the Level Four certificate, the highest level currently recognized by CrossFit, Inc., the coach must record several years as a Level Three and pass a test.

Criticism
Crossfit is extremely popular among people who want to be fit. However, the crossfit workouts have been severely criticized for causing injury. In response to these criticisms, CrossFit, Inc. claims, “CrossFit is relatively safe even when performed with poor technique, but it is safer and more effective when performed with good technique.” CrossFit, Inc. also claims risk for injury can be reduced by properly scaling and modifying workouts, a concept taught on its website and at the CrossFit Level 1 Trainer Course

Source of this article- wikipedia

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