Swami Mukundananda
Why do I feel sleepy and lazy when I sit for meditation or sadhana?
Why the mind feels lazy in sadhana
In sadhana the material mind is being engaged in the spiritual realm. This is against the nature of the mind, so it feels lazy. It does not get ras, the bliss, immediately as it does in the world.
The material mind is being engaged in the spiritual realm, which is against its nature, and so the mind feels lazy; it does not get rasa, the bliss, immediately as it does in the world.