A yoga mat comes in a lot of different colors and patterns, materials and qualities. Yoga is about balance.
Stress can lead to a whole slew of other health problems. Get some nice yoga apparel. Yoga increases muscle tone, strength, stamina and flexibility.
Many people, who attend Hatha classes, appreciate the relaxed feeling they get from the exercise aspects. It requires no adherence to a belief system and there are no deities. Manage your stress and achieve balance between your private, and work life.
The advantage of a Yoga video is that you can do it at home on your own time. You can't change it overnight.