Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: Changed my clothes at work and had my pre-workout..  In route to the gym and there is traffic all over - pre workout kicking in..
This tweet contains emotions: 
joy, optimism