When the minds of ministers, schoolteachers, and students are continually excited by study, and the body is allowed to be inactive, the nerves of emotion are taxed, while the nerves of motion are inactive. The wear being all upon the mental organs, they become overworked and enfeebled, while the muscles lose their vigor for want of employment. There is no inclination to exercise the muscles by engaging in physical labor, because exertion seems to be irksome. CH 572.2
Ministers of Christ, professing to be His representatives, should follow His example, and above all others should form habits of strictest temperance. They should keep the life and example of Christ before the people by their own lives of self-denial, self-sacrifice, and active benevolence. Christ overcame appetite in man's behalf; and in His stead they are to set others an example worthy of imitation. Those who do not feel the necessity of engaging in the work of overcoming upon the point of appetite will fail to secure precious victories which they might have gained and will become slaves to appetite and lust, which are filling the cup of iniquity of those who dwell upon the earth. CH 572.3