These yoga poses for beginners will help to relieve lower back pain, increase flexibility for the splits, and release tension from sitting down all day long. http://avocadu.com/yoga-poses-beginners-hips/
Frog: Come to all fours and place a blanket under right knee, just off the mat. Slowly allow right knee to slide away from body as you lower hips and then chest toward the mat. Make a pillow with hands for head (or use a block). Allow hips to sink to wherever is still comfortable and breathe there for 5 to 10 deep breaths.