I’m 5’4, 125 pounds (estimation) and I’ve struggled with exercise and being athletic my entire life. I could never run, I’m more of the stay inside and read a book type than go outside, run around and play. Today in P.E, we had to do the Fitness Gram Pacer Test, but we stopped once we did 15 laps. At about 6 or 7 laps in I was already tired, then I felt so weak, even by the next class my chest was still hurting and I was breathing heavily even though it was about 20 minutes after I did that test. I was born with a backwards heart basically, and had to have an arterial switch, I wasn’t supposed to walk, talk, or do many things most children can do. But I’m still alive. I feel as if I’m just using this as an excuse and I feel guilty that I geniunely get so exhausted from minimal work. God, even walking up the stairs makes me feel tired and makes my legs hurt. I just wish I could be a normal person who was somewhat athletic, and I need advice on what to do (If I should go to a doctor about this or try to start getting back in shape. sorry if this was hard to read I am young)