ET Phone Home!
"Ten is the number of digits in your mother's phone number. A new study published in the journal Evolution and Human Behavior might entice you to call home more often: Researchers found that talking to MOM on the phone lowers stress levels, but chatting with her online does not. The theory is that it's the sound of her voice that's calming, not what she says (no need to worry Mom with that detail).
So give your mom a ring on Mother's Day--Sunday, May 13.
Hearing from you will make her pretty happy too."
Real Simple Magazine, May 2012,the simple list page 8