What is one main function of nervous tissue? communication between the brain and the rest of the body contraction of muscles that results in movement transportation of fluids throughout the body protection of organs from the environment

The nervous system has three main functions: To collect sensory input from the body and external environment. To process and interpret the sensory input. To respond appropriately to the sensory input.

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

fitness healthcare agent