stimulating
stim-u-lat-ing
adjective
Causing excitement, interest, or mental activity; invigorating or thought-provoking.
"The debate was a truly stimulating experience."
Thesaurus
Synonyms: invigorating, exhilarating, stimulant, stimulative, salty, stirring, piquant, thought-provoking, rousing, exciting, thrilling, challenging
Antonyms: unexciting, unstimulating