First, let me say this, if you're on a prescribed anticoagulant medication, there is nothing you should do to assist clotting before having a serious talk with your doctor about bruising and taking something for it.
Some people naturally bruise more easily due to slow clotting factor chemicals produced in their bodies. And others clot more rapidly, so capillaries that "spill" into the tissue under the skin causing a bruise (hematoma) to form shut down the process quicker.
Now, all that being said, if you are not on any medication, are generally in good health and think that you bruise too easily, there are a couple of things that may help. First, when you bump your body , stop for a minute or two and apply a cold compress. This helps slow down bleeding. Secondly, eating foods that are high in Vitamin k may also help reduce your clotting time a bit. And most of it is delicious and even good for you. Go to ' foods high in Vit K ' on line and see for yourself. Good luck and good health.