sentence: A young man is stepping up and down in a forward motion on a step apparatus in a gym studio and his arms are also moving forwards and backwards. sentence:  He steps across the step board to the opposite side. sentence:  Then he steps across the board so he is backwards. sentence:  And then moves around the side of the board. sentence:  He proceeds to go all the way around the board in different directions. sentence:  He makes a turn around the board. sentence:  And continues to cross the board in all different directions while dancing.