There is provided by this invention a portable, elastic, and resilient exercising sleeve that can be placed around the torso and the extremities of the body for performing muscle strengthening and conditioning exercises that is generally comprised of a large elastic oblong center section having connected at opposite ends thereof a plurality of smaller elastic positioning sections with the large oblong center section and the smaller positioning sections co-joined to form a one piece multiple muscle exercise device. The exercising sleeve is disposed to receive the extremities of the human body for stretching and strengthening the muscles.