Controlled Variables, Manip. Variables, & Responding Variables help me which one is which PLEASE =D?

Question

I'm doing this FORMAL Lab for bio

so basically someone blows into the straw at the bottom of a test tube filled with bromthymol BLUE mixed with water until it turns to a yellow/green color

then the person does 56 jumping jacks then blows into the straw again til it turns yellow/green until but in a DIFFERENT test


what is the controlled, responding, and manipulated variables?
and can the variables be an ACTION like BLOWING INTO THE STRAW?

Answer 1

It looks like this experiment is comparing results of the the chemical reaction (color) under normal conditions (control) to results of the chemical reaction after exertion.