The principle is embraced by Crossfit, as per their random workouts - of - the - day, and also follows a tangent of the Hormesis theory: small doses of individual exercises, eg, conventional deadlifts one week, good mornings the next, sumo deads the next week, and so on and so forth — will improve your squats; the body never knows what's coming (even though you might have planned it weeks in advance, or at least planned to check The WOD Shop). (caloriesproper.com)
We had no idea what we were doing, so I just did some random workouts on various machines. (chrissalvato.com)