What is a more formal or appropriate word to replace the word high when writing "feeling high"? By feeling "high", I don't mean the person has to be smoking weed or taking crack. So the person is not in a trance, feeling dizzy or feeling psychedelic. He is perfectly healthy.
For example, a person dancing in a club, jamming on his guitar, having lots of fun, etc, he could say he is feeling "high".
But the word "high" sounds colloquial. What is a better word to replace feeling "high" in this context for writing?