True or False: As a client begins regular exercise, their caloric expenditure initially increases but later stabilizes.

The statement that a client's caloric expenditure initially increases but later stabilizes as they begin regular exercise is true. When a person first starts an exercise regimen, their body responds by increasing caloric expenditure due to several factors. Initially, the new physical demands of exercise lead to greater energy expenditure as the body adapts to the increased activity level.

Over time, however, as the body becomes accustomed to the routine of exercise, the rate of caloric expenditure may stabilize. This is partly due to improvements in efficiency; the body learns to perform the same movements with less energy as it becomes more conditioned. Additionally, factors such as metabolic adaptations and changes in body composition can play a significant role in this stabilization.

Understanding this concept is crucial for fitness professionals, as it highlights the need for progressive overload and variation in exercise protocols to continue promoting caloric expenditure and prevent plateaus in weight loss and fitness gains.