When it comes to working out, there are benefits to cardio, strength training, and stretching. Cardio burns calories and strengthens your cardiovascular system. Strength training tones your muscles and helps prevent injury. Stretching increases flexibility and also prevents injury.
If one type comes more easily to you depending on your needs and likes, you'll end up doing it more often, but that means you'll spend less time (or no time at all) on the other types. So tell me . . .