1. The psychological and cognitive capacity to focus, think, and process information
After studying for hours, my mental energy was completely depleted.
Depois de estudar por horas, minha energia mental estava completamente esgotada.
2. The vigor and vitality required for mental work and intellectual tasks
She dedicated all her mental energy to solving the complex problem.
Ela dedicou toda sua energia mental para resolver o problema complexo.
3. Psychological resilience and motivation needed for cognitive activities
Building mental energy requires proper rest and nutrition.
Construir energia mental requer descanso adequado e nutrição.