Every moment there is craving for some experience or the other. It is the most direct and immediate form of 'self'-validation and 'self'-continuity. Our only insurance against self-doubt or uncertainty.
UG points out that craving in any form - intellectual or religious, corporal or social promotes sensuality.
Sensuality or pleasure of experience 'simulates' the 'self' or the psychological beast while sensation 'stimulates' the biological beast to act for survival.