What is the benefit of wearing toe rings?

Mythological,

Wearing toe rings is highly practiced in India. It is worn as a symbol of married state by Hindu women and is called bichiya (pronounced: bee-chee-ya) in Hindi, Mettelu in Telugu, Metti in Tamil & kalungura in Kannada. Toe rings, also known as bichwa, are a must for married Hindu women. The tradition of wearing toe rings carries social significance for married Hindu women in India.

Scientifically,

Wearing toe rings is not just the significance of married women but there is science behind it. Normally toe rings are worn on the second toe. A particular nerve from the second toe connects the uterus and passes to the heart. Wearing toe ring on this finger strengthens the uterus. It will keep it healthy by regulating the blood flow to it and the menstrual cycle will be regularized. As Silver is a good conductor, it also absorbs polar energies from the earth and passes it to the body.