Sergio is eleven. His voice is deeper than it used to be, and his muscles are bigger. These changes illustrate which of the following puberty-related terms? Gonadotropin-releasing hormone

secondary sex characteristics

precocious puberty

primary sex characteristics

precocious puberty

Explanation:

these are common warning signs of overtraining syndrome:

washed-out feeling, tired, drained, lack of energy

mild leg soreness, general aches, and pains

pain in muscles and joints

sudden drop in performance

insomnia

headaches

decreased immunity (increased number of colds, and sore throats)

decrease in training capacity/intensity

moodiness and irritability

depression

loss of enthusiasm for the sport

decreased appetite

increased incidence of injuries.

a compulsive need to exercise