Extremely difficult
Srimad-Bhagavatam
SB Canto 5
SB 5.26.40, Purport:
The human form of the Supreme Personality of Godhead is extremely difficult to understand, and, in fact, for a common man it is inconceivable. Therefore Ṛṣabhadeva has directly explained that His own body belongs to the spiritual platform. This being so. Ṛṣabhadeva did not actually pass stool and urine. Even though He superficially seemed to pass stool and urine, that was also transcendental and cannot be imitated by any common man. It is also stated in Śrīmad-Bhāgavatam that the stool and urine of Ṛṣabhadeva were full of transcendental fragrance. One may imitate Ṛṣabhadeva, but he cannot imitate Him by passing stool that is fragrant.