All age groups have started exercising less, but the decline is greatest among young people up to 29 years of age. A possible explanation is the e-bike, because young people do more sports. Yet they do not meet the exercise guidelines, because they spend less time on the bike, for example. “A possible explanation is the use of the e-bike. This allows you to cover the same distance in less time, which could result in fewer minutes of cycling per week.”