a painless technique that helps a person train her mind to control her body. A biofeedback machine provides information about body processes (such as heart rate) as the woman relaxes her body
Tension and stress can also be reduced through biofeedback, in which an individual consciously attempts to modify skin temperature, muscle tension, blood pressure, and heart rate.
It makes you a better person in the eyes of others. And you as an individual should better when helping others. and one day ( there is an old saying) when you need help, someone will be there for you...
they can be nitrogen fixing bacteria and they take nitrogen from the air and change it through a series of reactions in nitrates which plants use as their source of nitrogen