Jayapataka Swami: So this feeling, sleepy while chanting japa, this is a sign of advancement! By chanting you are feeling peaceful! And therefore you want to sleep! Ommm Shanti Shanti Shanti! But it is not the highest form of advancement! We want that we feel some enthusiasm. We want to chant and serve the Lord. So if we are feeling sleepy while we are chanting, we can stand up. We can walk and chant. Srila Bhaktisiddanta Saraswati Thakur he would always walk while chanting. So some people they like to sit and chant, and some like to walk and chant. No hard and fast rule. You can also chant the Panca Tattva mantra to get some special boost! SRI KRSNA CAITANYA PRABHU NITYANANDA SRI ADVAITA GADADRHAR SRIAVASADI GUARA BHAKTA VRNDA! NITAI GAUR! NITAI GAUR! NITAI GAUR! HARIBOL!