There is a whole cluster of enterprises associated with bicycles. Selling a bike is only the first we might think of. Repair works are the most tricky part of bikenomics, a bit like bidenomics. In many cities during spring and summer it is even more difficult to get an appointment for bicycle repairs than for a doctor’s appointment, and that can be hard at times. Shortages of skilled technicians are pervasive in this sector. DIY for do it yourself is the best alternative. With the arrival of e-bikes and the digital connectivity the skill set has been enhanced recently as well. Insurance for bikes, lockers, helmets, airbag system or clothing including spectacles are part of the standard safety and security set of bicycle riders nowadays. Many, many job opportunities there and the willingness to pay for bicycles has steadily increased over the last years.

Berlin has just seen its 48th bicycle demonstration in 2024-6 on roads including 2 motorways with several ten thousands of participants. In a star like fashion multiple tracks met at the city center. The final meeting with stands and information was at the Deutsche Technik Museum with refreshments and repairs. The exhibition of cargo bikes and taxi bikes or “rickshaws” was another highlight. We need to rethink our mobility concepts and try to get the sharing to work more comfortably. For different purposes and activities you need a different bike. Ownership of each is no longer adequate as for example with aging alone your preferences for mobility with bikes also changes. Sharing is caring and this is also part of bikenomics.

Weight Stigma

The fashion industry has for a long time produced images of mostly women and men that did not correspond to the normal weight distribution of people. Skinny models were present across all media. The so-called social media of today amplify this trend further. The “Barbie hype” has reinforced the idea of low weight as a socially desirable norm. In scientific research the term coined for this phenomenon is “internalized weight stigma” (IWS). A study shows (Highes et al. 2024) it affects more women than men and more people who are described as socioeconomically disadvantaged adults. Pressure to lose weight originates from multiple sources and social media platforms have given rise to bullying. A major outcome of IWS is eating disorders as eating is often wrongly associated to be the only cause of higher weight. It is not. Many other factors contribute to the actual weight of a person. Even the overuse of the body mass index (BMI) as short hand version to define overweight or obesity is misleading for persons with strong muscles. Just fixing on one parameter of body shape or weight tends to reinforce weight stigma. “Keep walking” and a regular healthy diet, this avoids to internalize a weight stigma. Exercise is fun, the more you do it in a group, the easier it is to get going regularly. We ought to keep trying and eventually it will become a routine.


The physiological benchmarkS of VOPs (Very Old Person) has been lifted by an Irish athlete recently. The 92 year old person has been examined with state of the art physiological measurements to better demonstrate the training efforts and health outcomes of the VOP. In fact the cardiovascular fitness is comparable to a much younger person without much exercise. In differentiation to a sedentary lifestyle the VOP has a daily 40 minutes rowing routine plus 2-3 times resistance training, meaning weights. 20 years without injury made him indoor rowing champion repeatedly. Physiological benchmarks have been extended due to the surprising late onset of the training only at 73 years of age. Starting late with physical exercise allows to reap enormous benefits as well. For physiological fitness it is not only “use it or lose it” but “use it and extend it”. Almost irrespective of age the novel findings suggest a cardiovascular plasticity that was believed to be impossible. The descriptive account in “The Journal of Applied Physiology” allows no causal inference. Many cardiologists would probably even advise against such high intensity training without careful medical examination before, during and after some months. From a statistical or epidemiological point of view this statistical outlier will likely lead to adjustments of algorithmic potentials of human performance in older age. Handle with care, I would suggest. Working against resistance regularly remains an interesting perspective for an aging person and aging societies.