hi, i've recently started doing a lot less cardio and i'm finding that i can't endure tha pain as much as i was able before. Even holding my breath for swimming feels so much more painful. Is this because i've been slacking or perhaps my diet? I've been eating somewhat more lately although i have not gained weight. thanks

Pain? You're not supposed to have any pain.

Or are you talking about the burn? When your muscles become fatigued....

To be blunt....if you want to progress, forcing yourself to go the extra mile(per say)....is a necessity.

But again....if you feel pain, quit, and talk to your doctor. Especially with cardio.

well, it's not that type of pain... i'm talking about that almost stress-like feeling taht you you get when you hold your breath... i used to be able to swim a full lap in one breath now i can barely get 1/4 without collapsing... similar applies for running (not holding breath though)