You will find different answers on Internet for this question. Some have certain reasoning while others are followed just because of tradition that has been followed for ages. Our great great grands would have followed the tradition but they dared not to ask the reason behind these practice out of respect and eventually followed one onto another. My own grandfather said Rules are rules – our ancestors did this so do we…
I personally believe that our ancestors had their reasons to lay out certain rituals and practice but the followers would have missed to pass on the scientific reason to next generation. Here’s what I found an feasible answer for the question:
The main idol is placed in the core center of the temple, known as Garbhagriha. This is the place where earth’s magnetic waves are found to be maximum. It is said that the positive energy is abundantly available from the magnetic and electric wave distributions of north/south pole thrust.
Now Answering the actual question, Men usually have hair on their chest area. These hairs act as a receiver of charges present around them. Also people raising their hands above their head to pray so that the hair on the armpits can absorb the positive energy available around Garbhagriha.
So what about women? Well, Our ancestors had solution for women as well. GOLD..!!
Excluding current generation, women wear lot of gold ornaments from earrings, nose pins, bracelets, neck-pieces for the scientific reason of absorbing positive energy through gold.
There are many other scientific benefits for women wearing gold which I will share in another blog. For now sticking to the topic, Feel free to shed light on this question if I fell short of any facts.
Note : Please refer your school books to know more about Hair, Gold and Magnetic energy.