A person with low Ojas, may feel mentally ungrounded, stressed, easily fatigued, may get sick often, feel weak and unfocused.
A person with strong Ojas, on the other hand, feels peaceful, healthy, grounded, and able to handle day to day stress. Ojas also allows the mind to stay focused and at work. They tend to have a healthy, luminous, radiance about them. They are patient, compassionate and rarely become sick.