Why does meditation often lead to fatigue instead of freshness during energy awakening?

According to Osho, early fatigue in meditation arises because you’re still identified with the senses—the ‘horse’—so when they tire you claim their exhaustion as yours. As identity shifts to the witnessing ‘rider,’ sensory activity subsides, energy stops leaking outward, becomes conserved, and saturates your being. Then tiredness turns into unprecedented freshness; you don’t just feel fresh—you are freshness.