Walking is good for health and all the other exercises as well. But as Dumbledore said to Harry, the excess of even good things is toxic in large amounts.
She trained herself with the help of a local gym for a 10 km race and completed the race within two hours. While it was a feat in itself, it also had its side effects which turned out to be a little more extreme than thought.
Her story here is one of inspiration as well as of caution.
Accompanied by intense pain as if it’s going to explode. By the time, they rushed to the hospital during which it swelled to double its size and the internal fluid pressures were three times normal.
The fluid built up inside the intricate muscular structures and create pressure. She had to be operated and it left long 8-inch scars but then saved her of amputation.