How Much is Too Much?

Not that this would happen, but just in case...

Actually I was looking for whats the minimum I should be exercising and too see if I was doing too much or too little areobic work. Turns out I'm doing the right amount. Hooray.

The American College of Sports Medicine has issued the following guidelines for physical activity:
AEROBIC
Frequency 3-5 days per week
Intensity

50-85% estimated maximum heart rate, or exercise perceived to be "somewhat hard" or "hard"
Duration 20-60 minutes of continuous exercise
RESISTANCE
Frequency 2-3 days per week
Intensity/Duration 1-3 sets of 8-12 repetitions; 10 -12 total exercises, one for each major muscle group (chest, back, shoulders, biceps, triceps, quadriceps, hamstrings, gluteals, calves and core - abs and low back)