What should be lifestyle of a scholar? But before that what is the aim of the scholar?
No doubt, to attain knowledge as much as possible with as little efforts. Now to fulfill this aim, there are few things that can help us achieve it. A lazy, sloppy child cannot succeed as easily as an active and intelligent child can. Student must utilize all his time and energy judiciously as to be able to produce best results possible. All this actually boils down to physical, mental and emotional well being of the child.
No matter how marvelous and lofty your ideas are, if you are without power, than they are all worthless. You need strength and power to confront the great troubles and impediments that you may come across.
Bapu ji mentions a quote from scriptures about ideal life style of a student
काक चेष्टा बको ध्यानं, श्वान निद्रा तथैव च ।
अल्पहारी गृह त्यागी, विद्यार्थी पंच लक्षणं ॥
kāka ceṣṭā bako dhyānaṁ, śvāna nidrā tathaiva ca |
alpahārī gr̥ha tyāgī, vidyārthī paṁca lakṣaṇaṁ ||