nervous
of or relating to the nervous system
stressed
suffering severe physical strain or distress
miserable
very unhappy; full of misery
irritable
easily irritated or annoyed
relaxed
without strain or anxiety
energetic
possessing or exerting or displaying energy
delicious
extremely pleasing to the sense of taste
calm
not agitated; without losing self-possession
upbeat
pleasantly (even unrealistically) optimistic
in love
marked by foolish or unreasoning fondness