The "Indica = sleepy/couch-locked; Sativa = energy/head high" belief isn't true. The effects are caused by a complex mix of chemicals that isn't fully understood yet, and few producers talk about. Sativa and Indica have very little, if anything, to do with it. It also doesn't help that the vast majority of strains are hybrids, making the terms even more useless. The terms are just slapped on any strain that is perceived as uplifting or relaxing (edit: or have a genetic mix being majority one or the other).