Comparative Effects of Wim Hoff Method and Box Breathing Method in Mild COPD

The goal of this clinical trial is to support the role of effective, non-pharmacological interventions in the management of the symptoms of mild Chronic Obstructive Pulmonary Disease (COPD) or the anxiety, dyspnea, and peak expiratory flow rate decline. The main questions it aims to answer are * There are no significant effects of wim hoff breathing and box breathing technique on dyspnea, anxiety, and PEFR in mild COPD patients. * There are significant effects of wim hoff breathing and box breathing technique on dyspnea, anxiety, and PEFR in mild COPD patients. There 2 study groups, group A received box breathing technique and Group B of mild COPD patients received wim hoff breathing technique.