Which of the following best contrasts the caloric strategies for active weight loss versus long-term weight maintenance?

• A. Weight loss: primarily increase meal frequency while keeping calories the same; Maintenance: increase calories above pre-loss intake to prevent biological adaptations.
• B. Weight loss: create a sustained negative energy balance (calories in < calories out); Maintenance: adjust intake downward from pre-loss levels so calories in = calories out at the new lower weight.
• C. Weight loss: focus only on exercise without changing diet; Maintenance: dramatically restrict calories with occasional fasting to keep weight stable.
• D. Weight loss: rely exclusively on meal replacement beverages; Maintenance: avoid exercise entirely because activity increases appetite unpredictably.

Answer: (B)