Training for the biologically female body
Women are not small men
It should be a given that women in football get the same recognition for their performances as men. With B42 we give you every tool to reach a new level of athletic performance.

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Training programs built around the hormonal, anatomical, and physiological makeup of the female body boost motivation and training success. They also lower injury risk: from ligament tears to amenorrhea and osteoporosis to performance slumps.
Prevention Training
Safe on the pitch
Women suffer knee injuries up to 6 times more often than men.
Anatomical differences, hormone balance, and neuromuscular control play the central role here. The B42 app's prevention training targets exactly that, with exercises tailored to these risk factors.
Feature
Menstruation Mode
During menstruation, the app switches to low-intensity programs with reduced stimulus. Afterward, you move seamlessly back into the regular Gamechanger programs.
Cycle-Based Training
Four cycle phases, four training focuses, matched to your hormone balance and capacity.
Menstruation
Recovery Training
Low stimulus, calm sessions: fascia mobility and easy endurance work, for when estrogen is low and fatigue runs higher.
Follicular Phase
Strength Training
Rising estrogen loosens ligaments and tendons, which makes coordination work valuable, with a focus on valgus position and leg-axis training.
Ovulation
Endurance Training
Energy peaks here: the right moment for intensive endurance training.
Luteal Phase
Stability Training
Rising progesterone: baseline training to maintain strength, with room to adjust intensity to how you're feeling that day.
A voice from the field
Janine's path to pro football
Frequently Asked Questions
Are there anatomical or physiological differences in the training?
Speed and mobility programs stay similar to the men's versions. Strength programs, on the other hand, include women-specific exercises against anatomical disadvantages, with a focus on valgus position and leg-axis training. Rep counts are adapted too, especially for the upper extremities (pull-ups, push-ups).
What is Menstruation Mode?
Menstruation Mode responds to your menstrual phase with low-intensity programs and reduced stimulus: new territory in training programming. After menstruation, you move straight back into the regular Gamechanger programs.
Use your full potential
Stay fit and injury-free with B42 training built for the female body.
More on prevention & comeback