While Sunstone FIT has grown to offer a wider variety of fitness classes — hence a rebranding from Sunstone Yoga years back — yoga is still the studio's bread and butter. Sunstone offers eight yoga series with options including classes in hot or warm rooms. Hot Yoga (originally called Fire) is Sunstone's signature series. The class takes place in a carefully controlled room with a temperature of 98.6 degrees Fahrenheit and -60% humidity and is based on a series of sequenced yoga postures, which can be adapted based on flexibility and fitness level. Single classes are $30; unlimited monthly memberships start at $99.