Chest cramp?
Sometimes when I'm running I feel pain in my right chest and it actually hurts. (Location varies from right-left) Is something wrong with me? Maybe in my lungs? To make it more clear I'm not fat and I'm a runner (mostly for endurance jogging).
Also when I'm doing crunches it gets hard to breath, I'm not even sure if I'm breathing while doing crunches anymore.
Is there something wrong with me or is it the occasional chest cramp?