Although corporate culture has favored “morningness,” effective bosses recognize that people have different, hard-to-change circadian rhythms causing daily fluctuations in peak functioning. They must manage themselves and assign tasks accordingly. Strategic thinking, feedback, and emotionally demanding activities work best during high-energy periods. During low-energy periods leaders should delegate and adopt lower-intensity roles. For teams, schedule high-stakes collaboration during shared peaks and assign challenging tasks during individuals’ peaks and routine work during off-peaks. When peak alignment isn’t possible, prioritize recovery, flexibility, and rotation to prevent burnout and sustain performance.