Hi Welcome to HCm I have gone thru your query ,& can understand your concern for mild pulmonary hypertension while being on workouts for weight loss . Dear , result of your echo ,after cardio workout may be due to over exertion. . Cardio workout should be performed very carefully , gentaly to begin with Always start with deep breathing .Slowly fill air till your diphrgm and hold and breath out slowly deeply. It is good to strengthen your chest ,heart ,lungs , and in fact , your whole system and increase slowly & gradually . with required work out ---- has long been known to promote a strong immune system ,giving resistance from diseases , along with regular exercise ,pranayam - deep breathing . stretching & shaking gently , walk , yoga , , Kapalbhatti , Anulom Vilom , Bharamari , Aomkar naad , meditation . Do work out upto your limitation It is advised not to overdo . .Inclusion of essential nutriets -fiber ,green veges & fruit more than the carbs and fats, vitamins and minerals and antioxidants in natural form ---Garlic ,ginger Aloe vera lemon juice 30 ml , Amla ,Turmeric powder a level spoon + almond oil a Tspoon with hot milk ,at bed time, . Avoid processed foods carbs , sugar , fried fast foods , Tea , coffee ,alcohol and smoking , sleeplessness stress and Constipation all will produce biochemical and metabolic conditions in your body that will decrease your immunity . So avoiding is definitely the first step in the right direction to detoxing the body, boosting the immune system . There is no better option than physical exercise. Walking is the best exercise to begin with also gives you well shaped body . All are the pillers of our strong immune system responsible for healthy disease free life . Always remember, In case of any pulmonary hypertension, please see your doctor / professional Hope this helps solves your query .Take care .All the best .Get well soon Don t hesitate to come back in case of any further query