Everyone have unique physical body . Two yoga aspirant can not have same yogic experience with same kind of Asana.
Alignment is an important aspect of yoga .Alignment is an art of adjustment,with proper alignment yoga aspirant adjust his or her body to achieve desired Asana without any injury.Alignment helps to bring stability and peace in your mind The essential quality of an Asana as described by Patanjali yoga sutra is “Sthira sukham asana” means stability ,and ease in position.
If Asana practice is done properly it promotes structural stability,physiological immunity and emotional health.Many people join yoga for physical benefits though yoga is not a physical culture but there in no doubt that Asana practice helps practitioner to gain good health and peace of mind. Without proper alignment Asana practice does not give as much benefits as you can achieve with proper alignment .Many people got injury due to wrong way of doing Asana.
Alignment means accurate/precise positioning of various body parts/joints to gain maximum benefits from particular position(Asana) and to avoid any injury .Every individual have unique body structure.Various joints and there range of motion may vary from person to person. Alignment helps to gain balance among various muscles and joints. It helps Yoga aspirants to minimize yoga injuries and have more safe practice to achieve stability,strength,flexibility at physical level, On physiological level alignment helps to develop balance neurological and hormonal level. At emotional level proper practice of Asana will increases our self confidence,tolerance and compassion
adaptation also an important aspect in yoga . it is widely used in yoga therapy or restorative yoga. To have proper alignment adaptation plays key roll. In adaptation we can use some props or supportive tools as well as some modification to particular asana. It also help us not to becoming mechanical while practicing yoga .