I once read that Pablo Casals, the famous Spanish cellist, included Bach in his morning ritual. Upon rising each day, he would take a walk in nature. Returning home, he would play two Bach preludes and fugues on the piano.
Breakfast was next. Then, he would pick up his cello and play a few scales and arpeggios, followed by one of the Bach Cello Suites. In any given week, he had played all six suites. He made it a habit to play Suite No. 6 twice each week as he considered it the most difficult!