Usually, bruising is common in people with low platelet count. Platelets in the blood help in keeping the balance of too much bleeding and too much clotting, in daily activities.
Talk to your doctor during your next visit. It could be something as simple as the fact that your blood is pumping heavily, or it could be much more serious.
Easy bruising is often caused by problems with your diet. Try using some additional nutrients. Also stimulated blood flow due to exercise can contribute to the issue.
Among those who foolishly regard "wholistic medicine" as having some value, bruising easily after exercize, may show a necessity for "detoxification. " Vitamin C, like Divine Love, is a perfect detoxifier.