What is the goal of increasing lean mass while decreasing fat mass in a weight loss regimen?

The goal of increasing lean mass while decreasing fat mass in a weight loss regimen is primarily to improve metabolism. Lean mass, which includes muscle tissue, is metabolically active and burns more calories at rest compared to fat mass. By increasing lean mass, individuals can enhance their resting metabolic rate, which contributes to greater calorie expenditure throughout the day. This ultimately aids in effective weight loss and helps maintain a healthy body composition.

The other options do not directly align with this goal. Lowering protein intake may actually hinder the maintenance or building oflean muscle during weight loss, as protein is essential for muscle repair and growth. While focusing solely on fat loss could be part of a weight loss regimen, it neglects the importance of preserving or increasing muscle mass. Lastly, increasing calorie consumption contradicts the aim of weight loss, where a caloric deficit is generally needed to shed excess fat. Thus, aiming to boost lean mass while reducing fat mass is fundamentally about enhancing metabolism and promoting a healthier body composition.