When you train your entire body you have two options available to you: Go flat-out and try and exercise every muscle group as much as possible or train your entire body without exhausting everything. The second option has the advantage of requiring less time while still activating all the major muscle groups and leading to the adaptations that need to occur in order to experience strength and endurance gains. Do it consistently, over time, and you will see tangible benefits.
Extra Credit: 1 minute rest between sets.
