I have had Covid 3 times. The 2nd time was January 2023 a couple of weeks before a scheduled hip replacement. I developed anemia after the surgery and was taking iron pills for several months. I went to PT twice a week for almost 3 months. I continued to tire easily, but did return to working out at the gym and walking 3 m-4 miles several times a week. My weight kept going up even though i had no change in diet and was increasing my physical activity.Once my iron levels were back to normal , i continued to still tire easily. I was participating in a Covid research study and a home sleep study suggested i had sleep apnea. I got an official study from my provider which showed severe sleep apnea. Did Covid cause the sleep apnea ? Who knows? I believe the sleep apnea contributed to the weight gain. In December 2023, i increased my activity levels to more than i was doing before surgery. I have a healthy diet, rarely have sugar products, limit processed foods, etc. I am currently working on increasing my protein intake. I tried intermittent fasting with no weight loss. I have put on 12 pounds and no matter what i do exercise more, eat less, i don’t lose weight.