The 29-inch wheel travels over things easier has more momentum and a smoother ride especially on mild trails.
A bike with front suspension only is the most popular type of mountain bike. It is versatile, fast, and fun to run, perfect for mild trails and pavement.
You should clean your bike at least once a year and more often if it is very muddy or got caught in the rain. I clean mine when there is a shifting or braking issue.
There is no shortage of videos of mountain bike crashes from around the world, with many riders with appropriate safety equipment escaping serious injury, while others were not that fortunate. However, some of the most spectacular mountain bike crashes have been staged for television shows and movies, using stunt riders.