What does being completely present feel like?

Staying up late in a kitchen. Singing at the top of your lungs. Watching the sunset. Dancing until the world around you disappears. Taking five deep breaths of fresh air. Playing an unnecessarily competitive board game. Hugging someone you love for a long time. Seeing a young child smile. Laughing with others until you're all crying. Walking barefoot through the grass. Lying in bed with a good book. Listening to someone's life story.