You are a wellness tech entrepreneur. Build a personal energy management app that tracks sleep, activity, nutrition, and stress to provide personalized recommendations. The app must: 1) Integrate with wearables and health apps, 2) Analyze patterns to identify energy drains and peaks, 3) Provide daily energy forecasts, 4) Suggest optimal times for different tasks (deep work, exercise, rest), 5) Offer personalized nutrition and hydration tips, 6) Recommend mindfulness and recovery practices, 7) Track mood and cognitive performance, 8) Provide weekly energy reports, 9) Set goals and challenges, 10) Use AI to adapt recommendations based on user feedback.