Blanks was hired as a bodyguard for lead actress Catherine Bach during the filming of 1988’s Driving Force, due to the political unrest in Manila at the time; he impressed the producers so much, they wrote him into the script. This led to Blanks’ work in several martial arts films, including King of the Kickboxers and the first Bloodfist. Perhaps his most recognizable role to mainstream audiences is in the opening scene of Tony Scott’s The Last Boy Scout, where he plays a doomed pro-football player. Blanks also appeared as the kickboxing instructor to Ashley Judd’s character in Kiss the Girls.
In the late 1980s, Blanks developed the Tae Bo workout, while running a karate studio in Quincy, Massachusetts. He used components of his martial arts and boxing training. The name is a portmanteau of tae kwon do and boxing. Blanks opened a fitness center in Los Angeles to teach his new workout. He later attracted some celebrity clients such as Paula Abdul, and the popularity of the workout quickly grew, becoming a pop culture phenomenon after Blanks began releasing mass-marketed videos. The popularity of the workout later waned, but Blanks still attracts many celebrity clients, and Tae Bo videos and DVDs have continued to sell well.