a very stimulating experience/environment
stimulating
/ˈstim-yə-ˌlā-tiŋ/
adjective
producing stimulation: such as
enjoyably exciting or interesting
acting as a stimulant : producing increased energy or alertness
verb
noun
any of several glycoproteins that promote the differentiation of stem cells especially into blood granulocytes and macrophages and that stimulate their proliferation into colonies in culture