When you are exercising it is important to not over do it. This simple talk test helps you check to see if you are in the right work out intensity zone. If you don’t have a heart rate monitor you can just start talking aloud as you run or workout. You should be able to recite a nursery rhyme of speak pretty conversationally as you exercise. If you can’t speak without feeling winded then you might5 want to lower the intensity of your workout a bit until you can.