Which is not a symptom of overtraining answers?

Here are some examples of symptoms of over-training, any symptom that is given in the choices in your question, is not included to the symptoms of over-training.

First is the Lack of Motivation, wherein individuals lose their rhythm of training due to their lack of motivations or due to his or her excessive training. Second is the feeling of being sore following a big workout, big workouts should not be done many times, instead it should be controlled or sometimes distributed to other days, it could also lead to symptoms such as, Losing one's Grip Strength and Chronic Soreness in one's joints, bones and limbs. Next is becoming restless or the lost of one's focus, too much training removes rest from an individual and he or she may also lose their focus on why they are training, lastly, the feeling of being sluggish all day and becoming sick more often due to excessive training which is because of a sore body or weakness due to training.

A. mitochondrion b. nucleus