Dic: it stands to reason that

• It stands to reason that if you are considerate and friendly to people you will get a lot more back.
• It stands to reason that it'll be colder in January than it is in November.
• It stands to reason that the more experience you have, the better you'll be at solving problems.

1. PHRASE : V inflects, usu it PHR that | If you say it stands to reason that something is true or likely to happen, you mean that it is obvious.
2. to seem reasonable.
3. to seem likely to be true.

.... Cobuild, http://idioms.thefreedictionary.com/stand+to+reason