CrossFit for kids: a training guide for teachers

CrossFit for kids isn’t the same as the version you see in an adult training hall. In a physical education class it means short, varied exercise combinations that suit the student’s age and ability. Below I share examples from my own practice and a few rules that have proven themselves over the years.

Why CrossFit for kids works at all

The standard CrossFit competition format combines different exercises: barbell lifts, jump rope skipping, the rowing machine, pull-ups, handstand walking, dragging a weight. The winner is whoever completes the prescribed rep count fastest, or gets through the most rounds in the given time.

Of course, you can’t transfer this to a child one-to-one. But the logic of the format — short, fast, varied — suits a school lesson very well. It motivates, doesn’t drag on, and gives everyone something: a challenge for the faster kids, and a chance for the slower ones to compete against themselves.

How to structure a CrossFit lesson for kids

First rule: the basic skills must be in place. A child who can barely string five jumps together won’t race with a jump rope. The overhead pass in volleyball should be at least basically clear before you start tapping the ball against the clock.

Second rule: the emphasis isn’t on strength. In combinations designed for children, it is above all agility, speed, endurance and balance that develop. There is a strength element, but it doesn’t dominate.

Third rule: the whole game rests on honesty. Each child counts their own reps. Every now and then I quietly count along with someone’s reps or watch their performance — this keeps the system honest without turning the atmosphere into one of policing.

Fourth rule: a combination lasts 3–10 minutes. There’s no point going longer, because then the momentum fades and attention wanders. One lesson usually fits 3–5 such short workouts, either in the middle or toward the end.

Examples: CrossFit for kids in pairs and alone

Here are some combinations I use in my own lessons. Adjust the rep counts to the average level of your class.

1. In pairs: each partner scores one basket from a set distance (one shoots, the other holds a plank) + the pair does 5 squats facing each other, holding hands + each partner separately does 10 sit-ups. 5 rounds in total, against the clock.
2. Volleyball version: overhead-pass “tapping” above the head 12x + sit-up 12x = 5 rounds against the clock.
3. Alone: 4 push-ups + 16 lunge steps + 32 ball touches on both sides of the body = 3–5 rounds against the clock.
4. Across the hall: 5 sit-ups + run to the end of the hall and back + 10 sit-ups + run + 15 + run + 20 + run + 25 + run. Against the clock.
5. In pairs with a volleyball: 2 overhead passes over the net, both do 10 sit-ups, then 4 passes, 10 sit-ups again, then 6 passes, and so on. Which pair finishes first?
6. With a jump rope: 100 jumps + 20 hanging leg raises + 10 squats = 1–3 rounds.
7. The classic trio: 5 push-ups + 10 squats + 15 sit-ups = 3–5 rounds against the clock.
8. Badminton tapping: how many 10-rep sets can a pair complete in 5 minutes, tapping with badminton rackets?

There are endless variations. What matters isn’t that the child does everything in one go — they can, and should, rest. Each student works within their own abilities.

One small detail that works surprisingly well: background music. It sets the tempo and lifts the mood. Kids like lessons like this, and it shows.

FAQ

From what age is CrossFit suitable for kids?

Basically from school age, once a child can follow instructions and perform basic exercises. Age determines only the choice of exercises and the rep count, not the format itself.

Is it okay to put a barbell in a child’s hands?

In a school lesson, usually not. With children I work with their own body weight, a ball, a jump rope and light equipment. Heavier resistance comes into the picture much later and under completely separate instruction.

How do you avoid injuries?

Teach the technique calmly before you start racing against the clock. And keep the emphasis on agility, not strength — then the risk is minimal.

Author: Janar Rückenberg

Come and train! ArtGym