Yoga is a Hindu spiritual discipline which includes Breathing techniques, breathing control, meditation, and the adoption of different common and unique postures. Yoga is done widely all over the world to gain flexibility of the body and to gain control over the body postures.
So in this example, if Rosalba wants to participate in ballet dancing, she can definitely improve her dancing moves through getting flexibility from the techniques of Yoga.
When you touch a doorknob (or something else made of metal), which has a positive charge with few electrons, the extra electrons want to jump from you to the knob. That tiny shock you feel is a result of the quick movement of these electrons.
