Scenic Hudson, the environmental advocacy and land preservation group, now provides pretty places for Valleyites to do yoga. There’s nothing like performing the Warrior Pose or Sun Salutation in the sun, while savoring fantastic Hudson River views, to boot. So the organization hosted popular, free yoga classes at three of their parks (in Irvington, Sleepy Hollow, and Beacon) to celebrate the 2012 summer solstice. At the Beacon site, they also held “Tai Chi Tuesdays” in July. According to Scenic Hudson, the well-received yoga event may be reprised next summer, too.