The evidence for constrained total energy expenditure in humans and other animals

Key Points

• Constrained total energy expenditure suggests metabolic rates are regulated by physiological systems and limitations.
• Data from various species indicates that energy expenditure is not solely linked to activity levels but is inherently constrained.
• Observational analysis reveals patterns across animal models, highlighting similarities in human energy expenditure regulation.
• These findings support the idea that energy expenditure strategies are evolutionarily conserved across species.