[9] Besides the title track, which has been a staple of the band's concert setlists for more than three decades, Testament rarely plays any songs from Practice What You Preach anymore.

These songs received considerable airplay from album-oriented rock radio stations,[14][15] while its music videos found significant rotation on MTV's Headbangers Ball.

[4] The album has been included in various best-of lists in the years since its release, including Guitar World's "The Top 10 Shred Albums of the Eighties" in 1999; the magazine's editor Mordechai Kleidermacher wrote, "With their fast-and-chunky riffs and scorched-earth solos, Testament's Alex Skolnick and Eric Peterson show the world what true thrash-and-burn guitar terror is all about.

They embarked on a two-month U.S. tour from October to December 1989 with Annihilator and Wrathchild America (both of whom had just released their respective debut albums Alice in Hell and Climbin' the Walls), and wrapped the year up with two shows in California with Nuclear Assault and Voivod.

[19] Following their first visit to Japan that February, Testament embarked on a two-month U.S. tour with Savatage which featured support from Nuclear Assault, Dead Horse, and Dark Angel.