In the vedic culture the Gods of nature are worshipped, like Vasus (deity of elements: agni, jal, vayu and more), rudra, ashwini kumar and Aditya. Aditya means the son of devi aditi and this stotra pleases the Lord's heart and hence called Aditya Hrudayam Stotram. In hinduism or any other culture sages always worship the Lord Sun as the presiding deity. In one of the oldest text, vedas (Rigveda) the mantras and stotras are there to worship the Surya Dev. This blog gives aditya hrudayam stotra is sanskrit and english with meaning and explanation.
Sun salutation is a graceful and powerful combination of 12 asanas (postures) making a sequence. These 12 asanas (postures) are followed by the mantra of Lord Sun. Sun is the source of light and life. Light is the master which brightens the way and guide the person throughout the journey. So to remain energised and healthy we bow to God Sun with grateful heart.