Are your stressed out? Wherever you are, just pick up the phone and talk to your mother, for a new study says that her voice is the best stress relief.

Researchers have carried out the study and found that hearing mother's voice can quickly calm frayed nerves - and a telephone call often has the same effect as a hug, the Daily Mail reported. The findings could help explain why mother is often the first person people, even adults, turn to in tough times. For the study, the researchers at the University of Wisconsin-Madison looked at the role of oxytocin, a hormone involved in sex, sexual attraction, trust and confidence.