REED consists 5 rounds of 4 exercises (Row, Air Squat, Ski Erg and Sit Ups) that carry on for 1 minute each. The transition time between exercises should take no longer than 10 seconds.
To measure your performance, count your reps per round ( 1 calorie = 1 rep , 1xm = 1 rep). The goal is to keep your number of reps as constant as possible for the duration of the entire workout.
Scaling: You can scale REED by reducing from 5 to 3 rounds.