Almost every sport has its own special equipment and devices. Remember your physical education lessons: when doing gymnastics, you jump over a gymnastic “horse” or “goat,” do pull-ups on the horizontal bar, and do exercises on the uneven bars. When playing basketball, you throw the ball into the hoop, and during a volleyball match, you send the ball to the opponents' court through the net. In winter, you sled and skate, use ski equipment, which includes the skis themselves, ski bindings, and poles. Even more diverse devices and equipment are used in training. In this book we will talk about technical devices for gymnastics, as well as devices for simulating movements inherent in a particular sport - about simulators. Of course, there are many more such devices than are included in the book. Many of them are very complex in design, equipped with electronic devices and designed for training in specially equipped rooms. However, there are also very simple ones that you can make yourself or with the help of adults. Despite their simplicity, these devices will allow you to perform a large number of useful exercises.