In performing any laboratory experemint what is the first steps performed

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.

How does the color of light affect the germination time (amount time a plant takes to develop) of a radish seed?