After mork has gone through one full sleep cycle, his heart beats faster, his breathing grows fast and irregular, and his closed eyes begin to move back and forth. mork is most likely experiencing

REM sleep

Explanation:

The REM phase (being REM the acronym for Rapid Eye Movement) or MOR (Rapid Eye Movements), is one of the most important sleep phases. It is characterized by the presence of high brain activity, which may be visible in the performance of rapid and constant eye movements

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

how to know you're in love with someone you've just started getting to know can be a bit tricky because — feelings aside — they are technically still a stranger to you. although you might feel the urge to dive in and start professing your undying love for them asap, it's important to remember that it can be easy to confuse feelings of immense attraction with actual love.