Dribbling a basketball takes up more energy than you think. And it depends on more factors than you might have assumed too. Let's take a look:
The physics of dribbling in basketball: How much energy DOES it take to dribble?
When a basketball leaves your hand and hits the floor, it bounces back and returns towards you.
However, it loses a little bit of energy traveling through the air, and some energy is also absorbed when it makes impact with the floor.
So, in order for the ball to bounce back again, it will need enough energy to complete this journey.
It also depends on the ball, the material its made of, the floor, and how much energy the floor absorbs (also based on the material).
There's actually a science experiment based around this very idea. You can find it here: http://www.sciencebuddies.org/science-fair-projects/project_ideas/Sports_p037.shtml