CrossFit terminology explained
AMRAP: as many repetitions as possible. Perform them within a prescribed amount of time or until failure.
Box: a gym where you do Crossfit workouts. It's often a warehouse or large, stripped-down space containing only the essential exercise equipment to CrossFit like free weights, benches or boxes, suspension trainers, medicine balls, climbing ropes, mats, and pullup bars.
Heroes: benchmark workouts named after law enforcement officers, soldiers, and firefighters who have lost their lives in the line of duty. The workouts are a way of honoring the fallen.
MetCon: short for metabolic conditioning, a type of short, high-intensity workout, designed to improve your cardiovascular capacity and rev your metabolism.
Rx: as prescribed. Don't change any weight or reps during a workout.
WOD: Workout of the Day.