This is the first song released from the Californian Rock band Deftones sixth studio album, Diamond Eyes. The song was made available for free download through the band's official website on February 23, 2010.
Frontman Chino Moreno told Spin magazine this is one of his favorite tracks from Diamond Eyes. He added it is a "heavier" tune with "beautiful yet violent imagery," that has a fantasy vibe similar to "Knife Party."
In November 2008, Deftones bassist Chi Cheng was seriously injured in an automobile accident, leaving him in a coma. Sergio Vega, the former bassist of post-hardcore band Quicksand, filled in for Cheng. The album they'd recorded in 2007-08 with their incapacitated colleague, Eros, was put on hold whilst the band waited to see if he recovered and the Vega-assisted Diamond Eyes was laid down in its place. Unusually for the Deftones the tracks are upbeat and optimistic rather than their usual negative lyrical content. Moreno told Billboard magazine that thematically the album reveals a "positive zest for life." He added. "There's no complaining in this record and no hurting. I'm not singing about how I'm sad or that my life sucks. It's all pretty positive."
"Kickstart My Heart" is about all the ways Motley Crue gets their blood flowing without drugs. It was inspired by their bass player Nikki Sixx, who claimed he had to be revived with a shot of adrenaline to the heart after an overdose.