You can lower blood sugar through a combination of movement, food choices, hydration, sleep, and stress reduction. Most of these strategies work by helping your body use insulin more effectively or by slowing the rate glucose enters your bloodstream. For context, a normal fasting blood sugar is below 100 mg/dL, prediabetes falls between 100 and 125 mg/dL, and diabetes is diagnosed at 126 mg/dL or higher. Wherever you fall on that spectrum, the same core habits move the needle.
Walk After You Eat
The single most accessible thing you can do is take a short walk after meals. A study in Diabetes Care found that 15 minutes of moderate walking starting about 30 minutes after each meal was just as effective at improving 24-hour blood sugar control as a single 45-minute morning walk. For post-dinner glucose specifically, the short post-meal walks actually outperformed the longer morning session.
The reason is timing. After you eat, glucose floods your bloodstream as food is digested. When you walk during that window, your muscles contract and pull glucose directly out of your blood for fuel. This happens through a glucose transporter called GLUT4, which moves to the surface of muscle cells during physical activity and lets glucose in without requiring as much insulin. You don’t need to jog or break a sweat. A casual 15-minute walk around the neighborhood after dinner is enough to blunt the spike.
Build More Muscle
Aerobic exercise like walking helps in the moment, but resistance training (weights, bands, bodyweight exercises) creates a longer-lasting effect. Muscle tissue is the largest site of glucose disposal in your body, so the more muscle you have, the more glucose your body can absorb from the bloodstream at rest and during activity. Both aerobic and resistance exercise activate that same GLUT4 transporter through muscle contraction, meaning your cells take in glucose even when your insulin levels are low. Combining both types of exercise gives you acute control after meals and better baseline sensitivity around the clock.
Pair Carbs With Protein and Fiber
What you eat alongside carbohydrates matters almost as much as the carbohydrates themselves. A small dose of whey protein consumed with a mixed meal reduced total post-meal blood sugar by about 13% compared to eating the same meal without the protein, according to a randomized controlled trial in men with type 2 diabetes. Protein slows gastric emptying, meaning food leaves your stomach more gradually, which spreads glucose absorption over a longer window instead of producing a sharp spike.
Fiber works through a similar mechanism. Soluble fiber (found in oats, beans, lentils, apples, and flaxseed) forms a gel-like substance in your gut that slows carbohydrate digestion. The CDC notes that the Dietary Guidelines recommend 22 to 34 grams of fiber per day depending on age and sex, but most Americans get roughly half that. Increasing your intake doesn’t require a dramatic diet change. Adding a handful of beans to a rice dish, choosing whole fruit over juice, or swapping white bread for a high-fiber alternative all slow the rate sugar hits your bloodstream.
Drink More Water
Dehydration raises blood sugar through a surprisingly direct pathway. When your body is low on water, it releases a hormone called vasopressin that signals your liver to produce and release more glucose. It also triggers cortisol release, which further increases glucose output. In a study of men with type 2 diabetes, losing just 1.6% of body weight in water (roughly the equivalent of skipping fluids for several hours on a warm day) raised fasting blood sugar from 9.5 to 10.4 mmol/L and pushed two-hour post-meal glucose from 19.1 to 21.0 mmol/L. That’s a meaningful jump from something most people don’t think about.
Dehydration also activates a hormonal cascade that interferes with insulin signaling, making your cells less responsive to the insulin you do produce. Plain water is the simplest fix. If your urine is dark yellow, you’re likely not drinking enough.
Manage Your Stress
Stress raises blood sugar even if you haven’t eaten anything. When you’re under physical or emotional stress, your body releases cortisol, a hormone whose primary metabolic job is to keep glucose available for your brain. Cortisol does this by telling your liver to produce new glucose from amino acids and fats, a process called gluconeogenesis. It also directly opposes insulin, reducing insulin’s ability to suppress that glucose production.
This is a useful survival mechanism in short bursts, but chronic stress keeps cortisol elevated for hours or days at a time. The result is persistently higher blood sugar and, over time, reduced insulin sensitivity. Practices that lower cortisol, including deep breathing, meditation, regular physical activity, and spending time outdoors, have a real physiological effect on glucose levels. They aren’t just “wellness tips.” They change the hormonal signals your liver receives.
Prioritize Sleep
Even one night of poor sleep measurably impairs your body’s ability to handle glucose. In a study published in Diabetes Care, a single night of partial sleep restriction (roughly 4 hours instead of 8) reduced the rate at which the body cleared glucose from the blood by about 14%. Overall insulin sensitivity dropped by roughly 21%. That’s the equivalent of making your cells temporarily resistant to insulin overnight.
Sleep deprivation also raises cortisol the following day, compounding the problem through the same liver-driven glucose production described above. If you consistently sleep fewer than six hours, your blood sugar control is working against a significant headwind regardless of what you eat or how much you exercise. Seven to eight hours is the range most closely associated with healthy metabolic function.
Check Your Magnesium Intake
Magnesium is a cofactor for over 800 enzymes in your body, and many of them are directly involved in how your cells process glucose. It plays a role in glycolysis (the breakdown of glucose for energy), mitochondrial energy production, and the function of glucokinase, one of the key enzymes your pancreas uses to sense blood sugar levels. Low magnesium impairs all of these processes.
The recommended daily intake is 420 mg for men and 320 mg for women. Good food sources include pumpkin seeds, spinach, almonds, black beans, and dark chocolate. Many people fall short of the recommendation, particularly those eating highly processed diets. If you’re already doing the basics (moving, eating well, sleeping enough) and your blood sugar is still creeping up, magnesium status is worth checking with a simple blood test.
Consider Apple Cider Vinegar
Apple cider vinegar has modest but real effects on blood sugar. A 2021 meta-analysis found that daily consumption reduced fasting blood glucose by about 8 mg/dL in people with type 2 diabetes who had higher glucose levels to begin with. A smaller study found that two tablespoons (30 mL) daily for eight weeks, combined with a healthy diet, lowered A1C from 9.21% to 7.79%. That’s a substantial drop, though the dietary changes likely contributed.
The acetic acid in vinegar appears to slow carbohydrate digestion and improve insulin sensitivity, though the effect is modest enough that it works best as an addition to the strategies above rather than a standalone solution. Diluting it in water before meals is the most common approach. Straight vinegar can damage tooth enamel and irritate the throat.