At Bikram Yoga Boston & Harvard Square, certified Bikram Yoga Schools, athletes of all levels can sweat it out during daily 90-minute Bikram yoga classes that incorporate a series of 26 therapeutic postures or take a 60-minute pilates class. Studio co-directors Jill Koontz and Brad Koontz have both practiced Bikram from more than 50 years combined, finding that it was the ideal fitness and health practice for their bodies. They lead a team of certified Bikram teachers in contemporary studios equipped with quality heat and air filtration systems to help clients loosen muscles and prevent injuries.