The route of contamination states that once food is eaten that a food handler touched with feces on their fingers, a foodborne illness may result.

The fecal oral route of contamination

Explanation:

For instance, if a food handlers doesn't wash and tidy his/her hands after using the convenience and get contaminants in food and substances from feces from their fingers, and these foods get ingested, it may cause a food borne illness leading to fecal oral contamination.

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