Price bouncing off of sma

What is the logic behind a price bouncing off an SMA?

For example if a price bounces of a 35 day sma, i should short it if bounces of and go long if it breaks through, or vice versa.

I am jsut curious as to the logic as to why this is the case. Hope some of you guys understand my question, lol

Price doesn't bounce of the SMA or any other kind of MA. The moving averages "bounce" off price. The MA are lagging indicators. They tell you what price has already done in the past. The MA is just the same as if you drew a line on a historic chart with a pen "after" the fact.

So in answer to your question, there is no logic as to why price bounces of an SMA......because it doesn't.

And vice versa? Is there any logic in an sma bouncing off of price?