In the first half of the cycle, rising oestrogen tends to increase energy, confidence, and social motivation. Around ovulation, energy peaks. In the second half, progesterone rises, which can increase body temperature slightly, reduce sleep quality, and heighten emotional sensitivity. This is normal variation.
Tracking your cycle alongside energy levels, mood, and sleep for two to three months reveals patterns that allow better planning. High-output activities may land more easily in the follicular phase. Rest and quieter focus may suit the luteal phase better.