Source: 10 Fitness Routines to Work Your Entire Body FastEven if you have all the time in the world to spend at the gym, who wants to? Get in and out and on with your day by doing workouts that will strengthen all your muscle groups in a short time and get the heart rate up as well. Here are 10 do-anywhere total-body workout ideas that will save you time.1. Celebrity trainer Jeanette Jenkins developed a belly-fat-blasting workout sequence that is fast and effective. From oblique crunches to exercise-ball moves, this workout combines strength training and cardio for one effective circuit. ...