G.I.
I took an awesome prenatal yoga class in Reston at Beloved Yoga. They are off of Sunrise Valley & Reston Parkway. The instructor, Mariam, was also in Washingtonian magazine as one of the best yoga instructors for 2008. You have to be past your 1st trimester before joining and it's $130 for 10 sessions or you can pay as you go but I believe the price that way is $16/class? They offer a Thurs eve class or a Sat AM class www.belovedyoga.com