What happens to the reduced coenzyme in glycolysis

Dear student, 
​Please find below the solution to the asked query        

Reduced coenzymes such as NADH, FADH etc. provide energy in the form of ATP molecules.

• NADH produces 3 ATP (in glycolysis)
• FADH produces 2 ATP.​​

Hope this information will clear your doubts about the topic.    Regards