CrossFit HardCore E-Thrive class is a fun, moderately intense class, done in a group environment. Using bodyweight exercises, light weights and light cardio. An exercise "circuit" is consists of all prescribed exercises in the program. When one circuit is complete, one begins the first exercise again for the next circuit. Traditionally, the time between exercises in circuit training is short, often with rapid movement to the next exercise. You will have so much FUN, you wont even realize your working hard.