From Napoleon's great crab walk through Europe to J. Robert Oppenheimer's discovery of nuclear fission by kissing his own elbow, victory has always gone to the most flexible. Overpower enemies with today's Groupon to ISHTA Yoga. Choose from the following options:

• For $29, new clients get one month of unlimited yoga classes (up to a $160 value).
• For $99, new clients get three months of unlimited yoga classes (up to a $450 value).
For $649, new clients get one year of unlimited yoga classes (a $1,375 value).

These deals are also available for previous students who have not taken classes at ISHTA Yoga in the last six months.

ISHTA Yoga's skilled instructors lead students through poses enhanced with breathing exercises and meditation during 13 class types, available seven days a week. Inexperienced pupils can loosen uptight bodily knots with an ISHTA Basics class that introduces rusty muscles to simple yoga sequences, offering a surmountable challenge with clear and accessible instruction. Seasoned body benders and malleable clocks can enroll in Hour of Power, a hearty strength- and flexibility-building workout that unites breathing techniques with movement. Students in between may choose the restorative yoga class, where gentle movements, props, and essential oils join forces to relax nervous systems, or the intermediate Core Flow course, which stretches midsection muscles to tone abs and also increases meditation stamina, relieves back pain, and eliminates hairy-feet curses levied by evil witches.