How long after eating should people with diabetes exercise? Actually, individuals with type 2 diabetes need to keep their blood sugar levels at 160 mg/dl within two hours of eating. The researchers came to the conclusion that it is preferable for diabetics to begin exercising 30 minutes after meals since exercise can lower blood glucose levels. How to Judge Whether Exercise is Safe? Before you start exercising, you should measure your blood glucose. When you start exercising, your body releases stress hormones, which will temporarily raise your blood sugar. If you have diabetes and your body can’t control your blood sugar well, your blood sugar will rise too much in…