Are you enthusiastic about something? For what? Sport or literature or relationships or work, a hobby, music or an instrument or the success of others, perhaps your children? In German, the word "Geist" is in the verb and I interpret it like this: suddenly another spirit comes into play. You may notice this yourself: there is suddenly more life, more enthusiasm, commitment, passion, willingness to invest, be it time or money, more emotions etc. I think it's a privilege to have a life that allows something like that. Something that I would describe as extraordinary - in other words: different from the norm. Not something to be taken for granted. For me, it's also an indication of what you're burning for inside, what you've been created for or called to do. This spirit that makes you come alive. Perhaps like at Pentecost, when Jesus' followers were inspired by these tongues of fire. I don't know of anything like that in any other religion or movement.
I wish you an extraordinary day!