Strong coffee, especially one high in caffeine, can make the heart beat faster and temporarily raise blood pressure. Research has shown that caffeine can cause an instant rise in both systolic and diastolic blood pressure, with people at risk for hypertension being more sensitive to these effects. Caffeine can also slightly thicken the blood by causing mild dehydration and briefly reducing blood flow to the heart.
Cigarettes are even more dangerous. Nicotine causes the blood vessels to tighten, which leads to sudden spikes in blood pressure. Studies confirm that nicotine-induced vasoconstriction reduces coronary blood flow and contributes to vascular damage, significantly raising the risk of stroke and heart attack.

2. Eating fried, greasy foods for breakfast
Greasy or deep-fried foods such as crispy breads, sticky rice treats, and fatty noodles can make your blood fat levels rise immediately after a meal. Foods high in saturated fat or trans-fat are especially harmful because they raise LDL, the “bad” cholesterol, and add to the hardening of the arteries. Research shows that saturated fats increase LDL-cholesterol, while trans-fats not only raise LDL but also lower HDL, the “good” cholesterol.

3. Starting the morning with intense exercise or stress