If your blood pressure is running low, several practical strategies can bring it up, from drinking more water to changing how you sit, stand, and eat. Low blood pressure is generally defined as a reading below 90/60 mmHg, but most healthcare professionals only consider it a problem when it causes symptoms like dizziness, fatigue, blurred vision, or fainting.
Drink More Fluids, Especially Water
Water is one of the simplest and most effective tools for raising blood pressure. Fluids increase your blood volume, which directly pushes pressure higher. If you’re even mildly dehydrated, your blood volume drops and your pressure follows. There’s no single magic number for how much to drink, but making a conscious effort to increase your water intake throughout the day is a reliable first step.
Alcohol works in the opposite direction. It’s dehydrating and can lower blood pressure even in moderate amounts. If you’re dealing with low readings, cutting back on alcohol while increasing water is one of the highest-impact swaps you can make. A cup or two of caffeinated coffee or tea with breakfast can also give your pressure a short-term bump, though caffeine itself is mildly dehydrating, so pair it with extra water.
Use Physical Maneuvers for Quick Relief
When you feel lightheaded or sense your blood pressure dropping (often when standing up), specific muscle-tensing techniques can push blood back toward your heart and brain within seconds. The American Heart Association recommends several of these “counterpressure maneuvers”:
- Cross your legs and squeeze. While standing or lying down, cross your legs and tense your leg, abdominal, and buttock muscles simultaneously.
- Squat down. Lowering into a squat position compresses the blood vessels in your legs and forces blood upward. Tense your lower body and abdomen while squatting, then stand slowly once symptoms pass.
- Grip and pull. Hook your fingers together in front of your chest and pull your arms in opposite directions with maximum force. This isometric contraction raises blood pressure quickly.
- Clench your fists. Make a tight fist, with or without something in your hand, and hold the contraction for several seconds.
These aren’t exercises you do at the gym. They’re quick interventions you use in the moment when you feel symptoms coming on, like when you stand up too fast or start feeling faint in a warm room.
Eat Smaller, Lower-Carb Meals
Blood pressure often drops after eating, a condition called postprandial hypotension. Your body diverts blood to your digestive system to process a meal, and if the meal is large or heavy in carbohydrates, the diversion is more dramatic. This is why some people feel especially dizzy or tired after lunch or dinner.
The fix is straightforward: eat six smaller meals throughout the day instead of three large ones, and keep carbohydrate content modest. Spreading your food intake more evenly prevents the large blood-flow shifts that come with big meals. This is particularly helpful for older adults, who are more prone to post-meal blood pressure drops.
Wear Compression Socks
Compression socks apply gentle, consistent pressure to your lower legs, which slightly narrows the blood vessels and prevents blood from pooling in your feet and calves. This pooling is a major contributor to low blood pressure when standing. Compression socks typically raise blood pressure by about 5 to 10 mmHg, which can be enough to eliminate symptoms for people with mild hypotension.
You can find them at most pharmacies. Knee-high styles are the most common for blood pressure management, and they work best when you put them on first thing in the morning before blood has had a chance to settle into your lower legs.
Increase Your Salt Intake
This is the rare situation where salt is your friend. Sodium causes your body to retain water, which increases blood volume and raises pressure. Most health advice focuses on reducing sodium, but if your blood pressure consistently runs low, adding a bit more salt to your food or choosing saltier snacks can help. This is worth discussing with a healthcare provider first if you have kidney issues or heart disease, since extra sodium isn’t appropriate for everyone.
Adjust How You Sleep and Stand
How you position your body overnight and how you transition to standing both matter. Elevating the head of your bed by about 9 inches (roughly a 10-degree tilt) can help regulate blood pressure while you sleep and reduce the sharp drop that sometimes happens when you get up in the morning. You can achieve this with a foam wedge under the mattress or by placing blocks under the bed’s head legs.
When you do get up, take it slow. Sit on the edge of the bed for 30 seconds before standing. Once standing, pause again before walking. That gradual transition gives your cardiovascular system time to adjust and prevents the sudden 20 mmHg drop that causes dizziness or fainting.
When Low Blood Pressure Is Dangerous
Mild low blood pressure that causes occasional lightheadedness is common and manageable with the strategies above. But a sudden, sharp drop is a different situation. A decline of just 20 mmHg, say from 110 to 90 systolic, can cause dizziness or fainting. Extreme low blood pressure can lead to shock, which has distinct warning signs: confusion (especially in older adults), cold and clammy skin, pale skin color, rapid shallow breathing, and a weak, fast pulse. These symptoms need emergency attention, as they indicate your organs aren’t getting enough blood flow to function.