Am I alone in this or is it a common problem? If I do anything that requires a bit of exertion, the next day my body aches like I've got the flu. Something between my muscles having a bad headache & a tearing feeling. This is not the same feeling I used to get the day after having a good gym session when I was ten years younger. It's so massively debilitating. I feel like an old lady but I'm only 48!! Yesterday I swept the driveway & tidied the front garden, today I can barely move for the agony. Anyone else have this? What can I do about it?