Some fad diets actually cause the dieter to lose lean Muscle, which can decrease strength and A. cause gastrointestinal problems
b. cause vision problems
c. lower metabolism
d. increase metabolism

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

if u need the answers look it up on google youll find it trust im just saying this incase no one out : )