The endowments of mind and body are to be carefully guarded. Our gifts are not to be weakened by self-indulgence. Every power is to be carefully preserved, that it may always be ready for instant use. No part of the physical organism is to be weakened by misuse. Each part, however small, has an influence on the whole. The abuse of one nerve or muscle lessens the usefulness of the whole body. Those for whom Christ has given His life should bring their habits and practices into conformity to His will.