Yoga pants are so comfy, and they can be worn for all kinds of reasons. 
I've worn them a lot over the past year while I was working from home
Yoga shorts are becoming more popular, especially with the warmer weather coming.
I haven't seen yoga shorts in the stores. Where can they be purchased?
Yogaoutlet.com has a wide range of selection and prices from many brands.
I will have to check that out. I also like to wear t-shirts with them. They are comfortable and great to work out in.
T-shirts were originally for the Navy to wear underneath their uniforms, during the Spanish World War.
That's interesting. What years was the Spanish World War?
It occurred in 1898, but has it's origins in the Cuban want for independence from Spain.
I have never been to Spain, although I speak Spanish