What is a synthetic drug?

Synthetic drugs are created using man-made chemicals rather than natural ingredients.

A number of synthetic drugs on the market, including Ecstasy, LSD and methamphetamine, are described in other booklets in The Truth About Drugs series. This booklet gives the facts about “synthetic marijuana” (Spice or K2), “synthetic stimulants” (Bath Salts) and a drug known as “N-bomb.” These are among the synthetic drugs known as “designer drugs.”:

are there any letter choices to this or is this an open ended question?

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