Put oranges on the AC

One school principal puts orange slices on air conditioners, claiming that the citrus scent helps students stay alert. It’s not as nutty as it sounds – research suggests that people who drink orange juice for breakfast are less likely to succumb to an afternoon slump, and generally feel more alert.
Go out for Indian food

The spice cardamom, which is found in chai tea, curries, and other Asian dishes, is known to have medicinal properties including increasing circulation, improving mood, and boosting energy, according to doctoroz.com.
Watch cat videos

Stress can drain your energy and take a toll on your mood. To feel better, some researchers believe that laughter may be the best medicine. So cue up some of those hilarious videos your friends are sharing on social media and see if a good laugh can help you shake off that sleepy feeling. “I believe that if people can get more laughter in their lives, they are a lot better off,” said Steve Wilson, a psychologist and laugh therapist in an interview with WebMD.