सुग्लायनाय सोलोंनायखौ हेफाजाब-होनो इसे गोबाव सिगां बायफिदबेक बुंनाय मोनसे थदगोनां मेसिन दिहुनजादोंमोन।
A sensitive machine called biofeedback has been invented not long back to help people to learn relaxation.