When one decides to become a Yoga teacher, there are many responsibilities. We are obligated to keep our students safe and to guide them toward states of relaxation and meditation. The physical style we know as Hatha is more than an exercise session. Hatha is one of the most widely recognized forms of Yoga.
In addition to these specific asanas, the practice of controlled breathing relaxes muscles and calms the autonomic nervous system, reducing vascular pressure and lowering heart rate. Recommended poses and breathing exercises vary depending on individual experience and degree of symptoms. As you should have learned in your foundational yoga teacher training, most of the recommended asanas for varicose veins are inversions which are contraindicated for high blood pressure, stroke recovery, eye problems, and heart conditions.
The cost of becoming a yoga instructor varies by the school and the qualifications required of instructors. To become a yoga teacher in specialized schools like Bikram or Iyengar can cost much more than training for certifications at other schools.