Moving back and forth in time is called time travel.
That is called oscillation.
Reciprocating.
I believe that it's just like basketball - dribbling. According to Webster: http://www.merriam-webster.com/dictionary/dribbling
Vibrations
Because the river want to turn 180 degree.
It is called vibrations.
i think that basketball does help your mucles because bouncing the ball and running back and forth on the court helps your mucles grow
That motion is called oscillation. It refers to a regular back and forth movement typically around a central point.
A back and forth motion is called oscillation. It involves movements that go in one direction and then reverse to go back the other way, typically occurring in a regular pattern.
Strokes.
It is commonly known as a basketball backboard.