What is the rule concerning abstinence?

Act or practice of refraining from indulging an appetite.

If there is one thing that I have learned then that is it is far better to be a total abstainer that a moderate partaker.

One has to have a reason for their abstinence, as for myself I learned that God had no desire for me to take into my body harmful substances. I therefor obeyed His word by not drinking alcohol, tea, coffee and smoking cigarets (And if I might add all Cola drinks) all on the same day. I have been an abstainer for well over forty five years.

There is no rule, only a reason.

Catholic Answer:

As the question is filed in the Catholicism category, I believe that is the answer required here. Catholics from age 14 on are required to abstain from eating meat on Ash Wednesday and all Fridays in Lent. The rule also applies to all Fridays throughout the year but Catholics may choose some other act of penance or good deed to substitute for abstinence from meat.