Knowing your triggers is step one. Step two is building a toolkit of strategies that address each one — practical, repeatable actions you can apply every day without overthinking it. These aren't theoretical concepts. They're battle-tested approaches that people with T1D use to cut their hypo frequency dramatically.

Let's walk through four strategies that cover the vast majority of preventable lows.

Strategy 1: Accurate Carb Counting

Carb counting errors are behind a huge percentage of hypoglycemic episodes. You don't need to be perfect — you need to be consistent and close.

Weigh and measure when possible. A food scale is the single most useful diabetes tool after insulin and a CGM. Eyeballing portions is fine once you've calibrated your eye, but most people overestimate portions (and therefore over-bolus) until they've spent a few weeks actually weighing food.

Read labels carefully. Check the serving size — it's almost never the whole package. A bag of chips might say "15g carbs" but that's per 30g serving, and the bag is 150g. That's 75g of carbs, not 15.

Double-check unfamiliar foods. Eating something new? Look it up. Use a carb counting app, check the restaurant's nutrition info, or ask. The five seconds it takes to verify could save you from a low (or a high) two hours later.

Account for fiber and protein. High-fiber foods have a lower net carb impact. High-protein and high-fat meals absorb more slowly, which can mean a delayed glucose rise — if you bolus the full amount upfront, you might go low before the food catches up.

Strategy 2: Smart Insulin Dosing

This is where insulin stacking gets addressed head-on.

Wait between corrections. The golden rule: don't correct a high within 3 hours of your last bolus unless your CGM shows a steep, unrelenting rise. Most of the time, the first dose is still working — you just can't see it yet. Patience prevents crashes.

Know your insulin-on-board (IOB). If your pump or app shows IOB, use it. If you're on MDI, track your bolus times manually. Before any correction, ask: "How much insulin is still active from my last dose?" If the answer is "a lot," wait.

Adjust for activity. If you know you'll be active in the next 1-3 hours, reduce your meal bolus by 25-50%. It's much easier to correct a mild high later than to treat a low during exercise.

Consider time-of-day sensitivity. Many people are more insulin-sensitive in the afternoon and evening than in the morning. A correction ratio of 1:50 at breakfast might need to be 1:70 at dinner. If your afternoon lows are frequent, your PM ratios may need adjusting.

Strategy 3: Activity Planning — Reduce, Fuel, Monitor

Exercise is one of the most rewarding parts of living with diabetes, but it requires a plan. The framework is simple: reduce, fuel, monitor.

Reduce: Lower your insulin before activity. For pump users, set a reduced temp basal (50-80% reduction) 60-90 minutes before. For MDI users, reduce the meal bolus before exercise by 25-50%. If you're on a long-acting insulin, talk to your team about dose adjustments on active days.

Fuel: Carry fast-acting carbs — always. Glucose tabs, juice boxes, gels. For activities longer than 30 minutes, plan 15-30g of carbs per hour. Don't wait until you're low to eat — preventive fueling is the goal.

Monitor: Check before, during (every 30-45 min), and after exercise. If using a CGM, set a low alert at 90 mg/dL during activity so you have time to act. And critically: monitor for the next 12-24 hours. Delayed exercise lows are real and common.

Scenario: Marcus and the "Reduce, Fuel, Monitor" Framework

Marcus plays recreational basketball every Tuesday and Thursday evening. Before learning this framework, he'd show up to the court at 7 PM with his regular dinner bolus on board and crash to 50 mg/dL by halftime. Every. Single. Time.

Here's what changed:

Reduce: He now cuts his dinner bolus by 40% on basketball nights, and sets a -60% temp basal at 5:30 PM.

Fuel: He eats a 20g carb snack at 6:45 PM (no bolus). He keeps two glucose gel packs in his gym bag.

Monitor: He checks his CGM at warm-up, halftime, and end of game. He sets his low alert to 90 mg/dL. Before bed, he has a 15g snack if he's below 130.

Result: in six weeks, he went from crashing at every game to zero exercise lows. His average post-basketball reading is 120 mg/dL.

Strategy 4: Meal Timing

This one is deceptively simple but often overlooked.

Eat within 15-30 minutes of bolusing with rapid insulin. If you bolus and then get delayed, you're setting yourself up for a low. The insulin doesn't know the food is late.

Don't skip a meal after taking rapid insulin. If you've already bolused and your plans change, eat something — even if it's just a snack that partially covers the dose. Then monitor closely.

If you'll be delayed, delay your bolus. There's no rule that says you have to bolus at the exact same time every day. If lunch is going to be late, take your bolus when the food is in front of you.

For high-fat/high-protein meals: Consider splitting your bolus — part upfront, part extended. A pizza bolus might be 60% now, 40% over 2-3 hours. This reduces the risk of going low immediately after eating while the slow-absorbing meal catches up.

Prevention Decision Card

Before any meal or activity, run through this quick mental checklist:

Print this, screenshot it, stick it on your fridge. After a few weeks, it becomes automatic.