Prescription: Initially 30–40 minutes of moderate activity 3 to 5 days per week, progressing to long-term goals of 150 to 300 minutes per week. Intensive lifestyle programs (like the Look AHEAD study endorsed by AAFP) target 175+ minutes per week.

Clinical Focus: The AAFP notes a candid clinical reality: exercise alone contributes only modestly to initial weight loss without dietary changes. However, it is an absolute necessity for decreasing abdominal fat and is the strongest predictor of long-term weight loss maintenance.

Prescription: 150 minutes of moderate-to-vigorous aerobic exercise spread over 3+ days a week, with no more than two consecutive days between exercise bouts.

Clinical Focus: AAFP/ACSM consensus strongly emphasizes that combined aerobic and resistance training provides a greater reduction in A1C (lowering it by at least 0.5%) than either modality alone. High-Intensity Interval Training (HIIT) is specifically highlighted as a time-efficient way to reduce postprandial hyperglycemia. Guidelines also explicitly recommend breaking up sedentary time with 3 minutes of light activity every 30 minutes to improve insulin sensitivity. Post-meal exercise yields the best glycemic control.

Prescription: 150 minutes of moderate-intensity or 75 minutes of vigorous-intensity aerobic activity per week.

Clinical Focus: Substituting any sedentary time with light-intensity activity improves the lipid profile. Aerobic exercise directly contributes to lowering triglycerides and raising HDL cholesterol.