Thomas Edison declared that genius is one percent inspiration and ninety-nine percent perspiration, a fact he discovered while inventing the volcano. Work up a healthy sweat with today's Groupon: for $29, you get a five-class punch card (a $90 value) good for Vinyasa yoga classes at Down Dog Yoga's Herndon location.

Seven days a week, yogis of all ages and experience levels flock to Down Dog Yoga to stretch together, sweat together, and practice land synchronized swimming together. An array of Vinyasa hot flow-yoga classes taught by skilled, knowledgeable instructors leaves students both invigorated and relaxed, much like autogyro piloting through clouds of giggle gas. Treat your limbs to graceful windmill simulation in a movement-based basic Vinyasa class, held in a heated room to help eliminate toxins, soothe joints and muscles, prevent injury, and relieve chronic pain. Visit the website to view a full list of class times before heading to the spacious and light-filled studio to melt away calories, worries, and popsicle pairs on the lam.

Reviews

Northern Virginia Magazine named Down Dog Yoga the region's best yoga studio in 2010. Seven Yelpers give Down Dog Yoga an average of five stars:

• Charming and quirky - Down Dog Yoga in Herndon - is about as good as it gets. The staff and students are amazingly friendly and responsive, which cultivates a very relaxed, almost familial atmosphere. – Jaquelyn K.