What makes Marrko core so effective?

The MARRKO CORE system of exercising is effective because it serves several purposes. The upper and lower body both get a great workout with one tool, and in a short period of time. No one-sided overworked group of muscles as is the case with sit-ups. MARRKO CORE allows for a very thorough workout of ALL core muscles. No imbalance, no pain! Lower back pain often stems from an uneven workout, but that is NOT the case with MARRKO CORE.

There are three major benefits to using MARRKO CORE:

  1. When using MARRKO CORE, the torso rotators are involved. These muslces form a healthy looking, slim waist.
  2. MARRKO workout is a workout for the inner stabilization system (LPHC, –) as well. Contraction of these deep core muscles provides segmental stabilisation of the spine. But because most workouts do NOT include the inner muscles, many posture problems arise. Marrko core is the path to go for anyone interested in improving poor posture.
  3. Two things can be adjusted with MARRKO CORE: the intensity of the workout and the weight of the actual tool. These adjustments change the dynamics of the movement, the strenght one has to use, endurance or the amount of calories burnt (using common cardio watch).

MARRKO CORE offers a great workout for both outter and inner muscle system. Combining the two makes for an elegant, slim body.

What makes Marrko core appealing to women?

MARRKO CORE primarily deals with issues of the waist. Waist is a problematic area for both men and women. That is where all our life style transgressions leave a footprint – from lack of movement to bad diet and stress.

If the goal during Marrko exercise is to burn the highest percentage of calories from fat, it is adviced to stay in the calculated target heart rate range for fat burn.

For women , it is at 50 percent to 65 percent of your maximum heart rate, which is generally the number 220 minus age.

For men, it is at 55 percent to 70 percent. A coomon cardio watch can help with etimating that zone during Marrko exercises. (Individual numbers can slightly differ after a check-up and a stress test.)

The movement with Marrko system of workouts is unique – Marrko tones both the outter groups of muscles (those other people see) and the inner groups, which can not be seen, but determine a healthy posture.

Another one of the many advantages that women will appreciate, is the low weight and the small size of MARRKO CORE. Marrko can be easily carried around in a handback due to its weight of only 10.2 oz! MARRKO CORE is perfect for both a dynamic, explosive workout and a relaxing stretching.

Has Marrko core been tested for its health benefits?

Yes, MARRKO CORE is a subject of a study being carried out by the Charles University Faculty of sports laboratories in Prague.

Tests that have been finished to date show a demonstrable benefit to the strenght of core with parametres better than with other workout tools. More tests are being done and the final report will be posted here after they are finished.

Who can use Marrko core?

Anyone. MARRKO CORE is suitable for people between the ages of 15 and 100  years of age, since it’s possible for anyone to adjust the intensity of the workout, weight of the tool and the range of movement according to their abilities and needs.

In general, a slow grow in intensity and a slow adding af weights is recommended, range of movement according of abilities, in case of injury recovery: following doctor´s advice.

Is Marrko core suitable for seniors?

The system of MARRKO CORE has features that fit seniors´ needs as well. Exercising with Marrko is easy, natural and safe. After a short while anybody can learn to use MARRKO CORE. The systém of exercises can also be modified for individuals who are overweight or partially disabled, and they can exercise in a seated position.

That way their motor skills can develop and their current health can improve. It´s never too late to face challenges stemming from older age. Regular movement is the best way to keep one healthy and happy. Age is only a number with MARRKO CORE!

Why should I exercise with Marrko?

Exercising with MARRKO CORE has 3 aspects.

Firstly, MARRKO CORE system is able to tone the inner stabilization system (LPHC) and other inner groups of muscles, which are often left out of regular workouts. In this manner it serves as a prevention from back pain as well as a rehab tool.

Secondly, MARRKO CORE is finding a lot of fans in the fitness world. MARRKO CORE aims at a healthy life style, correct posture, overall fitness, strenght for life, good movement and a better figure.

Last but not least, MARRKO CORE is perfectly suitable for active athletes. When it comes to sports at all levels, a strong core is the stepping stone to any achievement. No athlete can do without a muscular, balanced core. All movement starts or uses a support from the core. It affects the dynamics, strenght and accurateness of movement.

MARRKO CORE is the ideal compensation tool for sports with one-sided workouts.

What are the advantages of Marrko over other workout systems?


  • Effective: 5 minutes a day towards a strong core!
  • Takes up almost no space: you can fit Marrko in a handbag, backpack or a pocket!
  • Light: an entire fitness center in a package under 10.6 ounces is a small revolution!
  • Easy: everybody can do it!
  • Safe: utilizing the most natural workout position (standing) makes Marrko exercising less hazardous than other core workouts!
  • Fun: there is no pain and no sweat with Marrko core!
What makes Marrko core unique?

MARRKO CORE workout system uses centrifugal force to reach an effect that is completely new in the field of workout tools. The centrifugal force formed by spinning Marrko tips the center of gravity off its natural position in the middle.

The brain then sends a command to the deep stabilisation system of muscles along the spine to bring the center of gravity back. As a result, the deep group of muscles is being strenghtened, which makes MARRKO unique.

Who has been using Marrko and with what results?

Both the actual tool and the systém of exercises were originally invented by the creator to relieve his own back pain. When he succeeded with his own back, he started to look for ways in which he could spread his idea. Both MARRKO core and the system of exercises were adjusted to provide the most benefit to different target groups. This was achieved through a study done with 15 people between 15 and 60 years of age and different occupations. Marrko has been found benefitial to fitness trainers, soldiers, stay-at-home mothers as well as persons with sedatory professions. They all experienced visible figure toning after the first month of reported 5-10 minutes per day of MARRKO exercising. There has been a significant iprovement in the quality of life in people with sedatory lifestyle, who had been feeling tensions or pain in lower back or neck.

MARRKO also provides help with correct posture, which in young perons serves as a prevention against bad posture stereotypes.

How long will Marrko last if used regularly?

MARRKO CORE will be produced in Prague, Czech republic, with the best material brought from Germany, and carefully assembled in hand. The inventor (who is also the producer) insists on the highest quality of the product.

MARRKO CORE, if used for its purpose, will last forever.

Where can Marrko be used?

Anywhere. Thanks to its weight (10.2 oz), MARRKO CORE is easy to carry in a handbag, a backpack or a suitcase. That way anyone can workout with MARRKO CORE on a trip or in a fitness center. It´s certainly not a problem to workout in a kitchen either  🙂

Is the Marrko system safe?

Standing is the most natural pose for human beings. It is the most ideal position for workouts due to its stabililty. Injuries are rare. What´s more, the intensity of one´s workout is totally indiidual and up to one´s mood and condition.

Who is behind Marrko core?
Martin Kofroň - founder of MARRKO CORE

Martin Kofroň

The inventor of MARRKO CORE is an airborn batallion veteran, who hurt his spine in Afghanistan while on mission. MARRKO CORE was originally a rehab tool. Later, great benefits in the field of fitness, professional sport and stretching were proved as well.

What is the priority for Marrko´s author?

Ever since the very beginning, top quality and flawless function have been the very priority of the author.

What should be known about Marrko?

It is important to know that MARRKO CORE is not imitating any other invention.

MARRKO CORE is an original tool, fully functional and multipurpose. To this day no other fitness tool on the market has offered to provide such a thorough workout for the whole core.

Why is Marrko core so popular with people who have tried it?

MARRKO CORE is becoming popular with different target groups, women, for example, are finding it very helpful for its waist defining qualities, which seem to be the field of expertise for MARRKO CORE.

Why is Marrko appealing to athletes?

When it comes to sports at all levels, a strong core is the stepping stone to any achievement. No athlete can do without a muscular, balanced core. All movement starts or uses a support from the core. It affects the dynamics, strenght and accurateness of movement. MARRKO CORE is the ideal compensation tool for sports with one-sided training.

A strong core can absorb a major part of the force developed in landings, strenghtens the spine and protects inner organs from the shock associated with continued jumping and landing. It prevents the body from injuries in the long term when it comes to professional athletes.

Where and how is Marrko being tested?

MARRKO CORE is being tested at the Faculty of sports at the Charles University in Prague.

The Faculty of Physical Education and Sport of Charles University educates specialists in sport, physical education, physiotherapy and sport management. It is tested in the Faculty´s laboratory, which is one of the best equipped labs in Europe. The supporters who sign up for updates about

Marrko campaign will be posted about the results of tests and discoveries via e-mail in regular reports.

Is Marrko core going to help me with a prevailing back pain?

Back pain can stem from all kinds of causes. It is often caused by bad posture and lack of movement, which, sooner or later affects the health.

Bad movement stereotypes last a lifetime. Life style, nowadays, is mostly sedatory – children are forced to sit at the desk at school, adults sit in their offices and at home while watching TV in the evening. This often causes bad posture and a hunchback later on in life. People are designed to spend most of the day moving around and it is never too late to start.

MARRKO CORE was originally created to fix back problems, as the simple principle of using centrifugal force to stabilize and support the spine is simply genius. The centrifugal force tips the center of gravity from its original position, the brain sends an impulse to the inner stabilisation system o muscles to bring the center back and that way these inner, deep muscles get a very unique workout, that no other tool on the market offers. Therefore Marrko is a very important tool when fighting back pain.

What is appealling about Marrko core for very busy people?

Even very busy people who are otherwise not able to work out properly can get a very good workout thanks to MARRKO CORE, as it is easy to carry around and use anywhere – at home, at a rest on a high road, during a break at work.

How and where was the design for Marrko created?

The design of MARRKO CORE was created at the University of arts in Prague.

Eleven students created a design study and later a prototype being led by M.A. Ivan Dlabač a MgA.Vlastimil Bartas.

The winning design is by two students – Michael Rosa and Tomáš Chludil, whose impact on the final design of Marrko is major.

Can I pack Marrko core with me when I am leaving for vacation?

Certainly. MARRKO CORE is, thanks to its weight of only 10.2 oz and a flawless functionality, an ideal workout tool for travel. It takes almost no space in a backpack, a handbag, or a suitace.

Has Marrko core been stress tested for damage by use and longevity of its components?

Special stress test machines were constructed for MARRKO CORE, which were supposed to find weaknesses in the first Marrko core prototypes. One was found in the rope. The ball-bearing, which is affected by both radial and axial forces, did well. The rope of the prototype was a common climbing rope, and had to be replaced as well, because in a typical marrko movement the rope is being under extreme flex strain.

In cooperation with a different rope was fabricated speciically for Marrko core. It easily lasted 8 million rotations and 90 degree bendings with no signs of damage. The current prototype of Marrko core is therefore not susceptible to any damage even in very demanding stress tests.