You are sitting in a public place next to a new acquaintance to whom you are attracted. you feel this person’s hand touch yours. your heart beats faster, and you feel "butterflies" in your stomach. your increased heart rate and stomach contractions were initiated by what division of the nervous system?

Autonomic nervous system

Explanation:

The Autonomic nervous system has to do with the "fight or flight" and "rest and digest" branches. It has to do with increased heart rate, butterflies in the stomach, etc.

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

b is the correct answer