Manage your weight; lose if you need to. Healthy diet and exercise regime; get professional advice (from a doctor, not a gym). Avoid stimulants such as caffiene, spirits and tobacco. Reduce animal fat in your diet. Get enough sleep. Remove all possible stress-situations from your life. OK, we ve all got to work, but anything you CAN eliminate, do so. Therefore, some relaxation techniques may be in order. And there s currently a theory that stroking a cat and listening to it purr lowers your bloodpressure. Of course this only works if you actually like cats, but I do find it calming.