You should always try to change your exercises up a bit just to give your muscles a different experience. This could mean changing the number of reps, adding more weights or even moving on to a different exercise entirely. You can also do a variation of the same exercise. One way to do this is by changing the position of your arms or feet.
Most exercises have a wide stance or grip version. This is a great way to work your muscles from a different angle without dramatically changing the routine. When doing squats, for example, the feet are normally positioned shoulder width apart. With the wide stance squat, you shift the emphasis from your quads to your hamstrings.
You can also do pushups or bench presses with a wide grip. The wide grip in this instance works the chest and shoulders to a greater extent, while emphasizing less on the triceps, which would be the case with a closer grip.
A wide grip can also be used for pull ups. Spreading your arms to the outer part of the bar will work your lats while placing less emphasis on the biceps.
Normally, I always do my exercises with a normal stance or grip but like to utilize the wide variation every now and then just to change things up and keep my workout from feeling repetitive. If you are starting to get bored with your exercises, then a small change like altering the placement of your hands and feet to a wide position can really give you a whole different workout.
