I'm 56 why do I bruise so easy?

Maybe aspirin. BROADLY speaking, abnormal bleeding or bruising is due to (1) abnormality of soluble clotting factors (e.g., Von Willebrand's disease), (2) abnormality of platelet number or function (e.g., aspirin effect on platelet function), or (3) abnormality of capillaries. Whole books are written on the subject. You should see a hematologist for evaluation. It may be due to the aspirin you take.