Hi there, do you like yoga? I love Hatha yoga and Rāja yoga.
I have never done yoga. What are the benefits?
It mostly a physical exercise but also has meditative and spiritual benefits
I've heard people can do it to relax and get rid of stress.
Yes thats a major reason why Yoga gurus from India later introduced yoga to the West!
What does one do during the practice of yoga? Do I need equipment?
Well a yoga mat is preferred but not necessary. Since yoga is just about physical, mental, and spiritual practices
Makes sense. I assume a yoga mat would make it more comfortable.
Exactly, yoga mat is specially fabricated to prevent hands and feet slipping 
That's awesome. I think I may look into taking up yoga!