fatigue
temporary state
asthenopia
exhaustion
eyestrain
grogginess
jet lag
logginess
loginess
ache
boredom
debility
dehydration
dejection
dizziness
drowsiness
faintness
giddiness
heartache
homesickness
irritability
lassitude
malaise
malnutrition
numbness
sleepiness
sleeplessness
soreness
vexation
weariness