The instructions with mine Art say sit down for a few moments and relax before you take your blood pressure. Don't have the TV on (apparently Jeremy Clarkson can raise your blood pressure to levels that lift all the safety's and put you into 'Velociraptor Mode,' let alone the cost of replacing the TV you've just thrown a brick through.)
Don't gloat over old pictures of Raquel Welch, (has a similar effect to Jeremy Clarkson but is far more enjoyable and doesn't involve hollow point bullets.)
Try and contemplate the meaning of life, the universe and everything ... or failing that, drink four pints of Guinness (doesn't improve your condition, but makes you stop giving a sh*t regardless of what numbers it comes up with.)