My suggestion is exhilarating

causing strong feelings of excitement and happiness: an exhilarating helicopter trip

producing or stimulating physical, mental, or emotional vigor

Some synonyms: vitalizing, cheering, exalting, enlivening, gladdening, bracing, energizing, intoxicating, invigorating, refreshing, reinvigorating, renewing, restorative, stimulating, tonic

http://www.thefreedictionary.com/exhilarating "Collins English Dictionary – Complete and Unabridged, 12th Edition 2014"

Exhilarating

1. causing strong feelings of excitement and happiness: an exhilarating helicopter trip

2. producing or stimulating physical, mental, or emotional vigor

Some synonyms: vitalizing, cheering, exalting, enlivening, gladdening, bracing, energizing, intoxicating, invigorating, refreshing, reinvigorating, renewing, restorative, stimulating, tonic

http://www.thefreedictionary.com/exhilarating "Collins English Dictionary – Complete and Unabridged, 12th Edition 2014"