Intensity

How hard should we work out? How long should we work out? Can I work out 2 - 3 times a day? These are all questions that I have been asked many times. I am amazed that some people still think that workouts should be based on time and not intensity. I suppose that I could work out 2 or 3 hours a day if my workouts consisted of machine based exercises and cardio equipment. Then I wouldn't be stressing my body out too much and I could go to the "gym" 2 times a day. In my opinion the best way is to hit it hard and make it count. Meaning go to your box (or gym), and have a workout planned that works your entire body and also your energy systems (ATP, anaerobic, aerobic etc) be intense and make it count, NO HALF ASSING it! If it takes you 20 minutes to accomplish that - then walk away and be happy knowing that you did more of an effective workout than that person on the elliptical for 45 minutes.