Post-meal drowsiness (postprandial somnolence) is common. To stay alert: 1. Food: Avoid heavy, high-carbohydrate, or sugary meals which spike insulin. Instead, opt for smaller, balanced meals rich in lean proteins (chicken, tofu), healthy fats, and complex carbs (quinoa, vegetables).2. Supplements: Try Vitamin B-complex to support energy metabolism, or L-theanine with caffeine (found in green tea) for focused alertness without jitters. 3. Medications: Do not take stimulant medications without a prescription. Also, stay hydrated and take a quick 10-minute walk after eating to boost circulation. If this persists, consult a doctor to rule out conditions like insulin resistance or food intolerances.