Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: Riding at night has got to be one of the most exhilarating, refreshing things I have ever done.
This tweet contains emotions: 
joy, optimism