What is Rest-Based Training? Here's a secret to success in appreciating your exercises. HOW? When exercisers have approval to relax according to their requirements, they willingly function harder without being purposely conscious they are doing so.E=Extrinsic emphasis. Here's a secret to success in appreciating your exercises. HOW? There are 4 essential elements of RBT, stood for by the phrase R-E-S-T: R=Rest-based. When exercisers have approval to relax according to their demands, they willingly function harder without being knowingly mindful they are doing so.E=Extrinsic emphasis. With this in mind, a RBT exercise is commonly structured to be quick-moving as well as mentally motivating.S=Self-determined.