Proceed with treadmill walking plan

You instruct the patient on safe treadmill walking on a flat surface at a brisk pace. After 8 minutes, looking a little red in the face, he says that'll be enough for today, and requests to stop. He is slightly short of breath, and states he feels a little "winded" but puts it off to the fact that he has not exercised in over 2 months because of his injury.