Simplify the following text for a Grade 12 native English-speaking person.
Original: The founders and earliest practitioners of these religions ( e.g. Buddhism , Jainism , the Christian desert fathers ) lived extremely austere lifestyles , refraining from sensual pleasures and the accumulation of material wealth .
Simplified: The founders and earliest practitioners of these religions ( e.g. Buddhism , Jainism , the Christian desert fathers ) lived extremely austere lifestyles . They rejected sensual pleasures and the accumulation of material wealth .