Because unless you have a hill to coast down, or a really strong tailwind, you need to pedal to provide a force that can push the bike forward.
It was released as heat
Muscles are what makes your body move, whatever you do. So you need them for bike riding too.
have a helmete most important
to roll down the hill on a bike without pedaling is called coast or coasting
You can either pedal backwards while riding fakie, or buy a freecoaster hub which doesn't require any sort of pedaling while you ride fakie.
If you're racing the bike will be a little lighter and more aerodynamic. If your riding involves a lot of falls and crashes, a bike w/o brakes will have a few parts less to break If you think the looks are real important a brakeless bike can look sleeker. But for everyday riding, and riding in traffic, brakes are not only sensible, they're also required.
No because the bike would brake evry time so no
is a bike mechanical
In German, you say "Fahrrad fahren" to mean riding a bike.
riding a bike can have an advantage over a plane because if you don't want to pay money than a bike is better and that riding a bike gives you cardio.
Yes! Make sure youu always wear a helmet when jumping! Whenever riding, have proper riding helmet, not a bike helmet or anything else!
Wearing a helmet is important for head protection while riding a bike.