Info: I'm a freshman at my high school. I love my classes, schedules, everything..except I have gym every other day, and I can barely survive it. I have an absurdly long list of health problems that have made me very overweight, as a 250-ish pound female. I exercise regularly, I've been a vegetarian my whole life, and I take my medicine regularly, but nothing ever really works. In my gym class, you start out by walking for 10-15 minutes, then you do sprints, some form of ball game (handball, ultimate ball, dodgeball, basketball, etc), and then usually interval cardio training.
Problem: I don't get tired when I do gym, but rather my ankles and calves start almost unbearably aching. Barely 5 minutes into class, I have to slow down to a snail crawl because the pain is excruciating, even through I wear ankle compresses on both feet to help. I did a 24-minute mile for my last mile run test, and the only reason why I'm not failing gym is because I try extremely hard to catch up to everyone else and have a good attitude about it. Today, I had gym and it was terrible as usual, same excruciating pain, but when I got home I realized I was very tired from class and I decided to take a nap. When I woke up, I couldn't walk, and every time I tried to move my legs they'd cramp up because my muscles were so overworked. I'm hydrated, so I know it has to be because of the class, and now I'm scared that I'll be dealing with this nearly 3 times a week. If anyone can help me get through this by giving me advice, please reply. Thank you.