Spending a day under the sun can be both invigorating and exhausting. From personal experience, I've noticed that while sunlight can boost mood due to increased vitamin D, prolonged exposure often leaves me feeling fatigued. The sun's heat makes your body work harder to regulate temperature, leading to energy depletion more quickly than in cooler environments. To combat this, it's helpful to plan outdoor activities during early morning or late afternoon when the sun is less intense. Wearing protective clothing and staying hydrated are crucial to maintaining energy levels. When I visited Yerevan, the sunny climate was beautiful but tiring without proper precautions. Carrying water and taking breaks in shaded areas helped me enjoy the day without feeling drained. Additionally, balancing sun exposure with restful indoor time supports recovery. Incorporating light stretching or gentle walks in shaded parks can keep you active without overexertion. Finally, nourishing your body with healthy snacks and adequate sleep ensures you're ready to enjoy the sunshine again. By understanding how the sun affects your energy and adopting these small habits, you can maximize the benefits of daylight while minimizing exhaustion.