Long COVID, or PASC, refers to prolonged symptoms post-COVID recovery. HBOT shows promise in alleviating fatigue, brain fog, and joint pain. Long COVID, or PASC, refers to prolonged symptoms post-COVID recovery. HBOT shows promise in alleviating fatigue, brain fog, and joint pain. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle