<span>"Repeated drug use and/or alcohol use after a period of improvement from substance abuse is called relapse." Relapse is the term used to describe the return to the drug or alcohol. While recovering from addiction it is common several relapses to occur. This should not discourage the patients.</span>
The answer here is ATP.
ATP is used in the first step of glycolysis to convert glucose into glucose-6-phosphate (that's where the phosphate comes from).