You can revitalise yourself emotionally and physically by reciting this ancient Stotram, as both light and heat are essential properties of the Sun God.
 
One of the most powerful hymns that humanity can use in times of need is the Aditya Hridayam Stotram devoted to Surya Dev (Sun God). The Yuddha Kanda of Sage Valmiki's Ramayana mentions these divine passages. And soon before the war against Ravana, Sage Agastya recited the Stotram to Shri Ram. Shri Ram had spent sleepless nights and restless days up to that tragic day, frantically looking for his beloved wife Sita, who had been kidnapped by Ravana. As a result, it became necessary to calm him and supply him with the mental and physical power he need to face the enemy on the battlefield.