People who work out regularly invest a lot of time in building muscle, strength, and endurance. Yet one crucial component of a holistic training regimen is often overlooked: flexibility. It not only determines how supple our bodies feel, but also how efficiently we train, how well we move in everyday life, and how long we can keep our bodies healthy and high-performing.
For a long time, stretching was primarily seen as a mandatory part of the routine before or after a workout. Today we know that flexibility is far more complex than a few seconds of static stretching. Modern training approaches therefore rely on scientifically sound methods that combine mobility, muscle strength, and flexibility.
Mobility—More Than Just a Pleasant Physical Sensation
Whether we’re bending over, climbing stairs, lifting heavy objects, or performing athletic movements—our mobility influences nearly every activity in our daily lives. If it’s restricted, other muscle groups and joints must compensate for the lack of freedom of movement. Over time, this can lead to poor posture, muscular imbalances, and strain-related symptoms.
Our modern lifestyle contributes to this in particular. Sitting for hours at a time in the office, in the car, or on the sofa causes certain muscle groups to become permanently shortened and strained, while others are barely activated. The result is tense shoulders, stiff hips, or back pain —ailments that are by no means rare these days.
Those who regularly work on their flexibility not only improve their posture; the quality of their movement also increases. Exercises can be performed with better form, joints are loaded more evenly, and the risk of injury decreases. At the same time, athletes benefit from a greater range of motion, which in turn can have a positive impact on strength development and muscle building.
Stretching is beneficial, but not every method serves the same purpose
When people hear the term “stretching,” many automatically think of classic static stretching, in which a position is held for a few seconds. This form of stretching can certainly help improve subjective flexibility and reduce muscle tone in the short term.
In addition, there are dynamic stretching techniques in which movements are performed in a controlled and active manner. These are particularly well-suited as preparation for athletic activity because they prepare the body for upcoming movements while simultaneously activating the nervous system.
Sports science, however, now takes a much more nuanced view of the subject. While traditional stretching can improve flexibility in the short term, recent findings show that lasting structural adaptations in the muscles occur primarily when muscles work under tension in a stretched position. This is precisely where so-called muscle length training comes into play.
Muscle Length Training—The Next Step in the Evolution of Flexibility Training
In contrast to passive stretching, during muscle length training the muscle actively works against resistance while it is already in a highly stretched position. This creates a training stimulus that goes far beyond the mere sensation of stretching.
According to current sports science research, this form of exercise can promote adaptations within the musculature. The muscles are not merely stretched in the short term, but are adapted over the long term to accommodate greater ranges of motion. At the same time, the body develops strength precisely at the joint angles where many people typically experience weakness or restricted movement.
This makes muscle length training particularly beneficial for people with sedentary jobs, ambitious recreational athletes, competitive athletes, and anyone looking to specifically improve their flexibility. The combination of strength and flexibility creates a stable foundation for nearly any sport while also supporting a pain-free daily life.
Mobility Becomes Measurable – with EGYM Smart Flex
While traditional stretching is usually done by feel, EGYM takes a fully digital approach with its Smart Flex system. The eight Smart Flex devices were specifically developed to make muscle length training professional, reproducible, and personalized.
Following a personal analysis, the devices are automatically adjusted to each user. During training, light and vibration signals precisely indicate when to engage in tension and relaxation phases. This eliminates the guesswork regarding the correct training duration or intensity. Every user trains according to the same scientifically defined principles—tailored to their individual needs.
Another advantage is that all training sessions are automatically documented. This allows progress to be tracked objectively, rather than relying solely on personal perception.
The Fitness Hub Combines Analysis and Training
The concept becomes particularly interesting when combined with the EGYM Fitness Hub. Here, flexibility tests are conducted to assess the individual mobility of various body areas. Based on these measurements, each member receives targeted training recommendations for the appropriate Smart-Flex devices.
The results are simultaneously incorporated into the EGYM BioAge score for flexibility. This score makes progress visible and shows how mobility is developing compared to one’s own age group. As a result, an area of training that was previously often difficult to measure now has an easily understandable metric for the first time. It is precisely this transparency that provides additional motivation for many exercisers and makes improvements immediately apparent.
The Ideal Complement to Strength Training
Many fitness enthusiasts still view flexibility and strength as separate training areas. In fact, they complement each other perfectly. Greater flexibility enables clean movement patterns and often a greater range of motion during strength exercises. At the same time, strong muscles ensure that newly gained flexibility can be used in a controlled manner.
EGYM therefore takes a holistic approach. Alongside the well-known Smart Strength machines and the cardio area, Smart Flex forms the third pillar of a modern training concept. Strength, endurance, and flexibility are intertwined and form the foundation for sustainable training success—regardless of whether the goal is muscle building, weight loss, performance enhancement, or preventive health care.
In a nutshell: Flexibility deserves a permanent place in your training plan
Stretching has long been more than just a brief ritual at the beginning or end of a workout. Modern research shows that targeted flexibility training can make an important contribution to health, performance, and well-being. Those who improve their flexibility benefit not only in sports but also in everyday life through greater freedom of movement, better posture, and a lower risk of muscular discomfort.
With smart solutions like EGYM Smart Flex, this training is, for the first time, digitally guided, individually tailored, and objectively measurable. This makes flexibility a training goal that can be planned just as easily as muscle building or endurance—and an integral part of a truly holistic fitness concept.
Editorial team at fitnessmarkt.de
Image source: #627242170 ChasingMagic/peopleimages.com / stock.adobe.com
Published on: 3 August 2026