Your client is on the treadmill exercising at 5 METs and 50% of her VO2 max, a level that she sustains for 45 minutes. What level of exercise is she performing at? a. Moderate Exercise b. Vigorous Exercise c. Light Exercise d. High Risk Exercise Moderate exercise is considered any form of exercise that can be sustained for 45 minutes with a MET level of 3-6 and 40-60% of the individual’s VO2 max.