For sure... try doing a push-up with significant straightening, a tear in the cord, and bulging discs in your neck, or the same with pull-ups when the pain shoots through your shoulders. Crunches/sit-ups? I can't even lay on the floor, let alone repeatedly. I can't hang my head over the counter while I'm reading mail, so hanging it out over the floor for push-ups makes me see stars.
I agree with the above - it starts and ends with diet, if you can't get that right, you won't make much progress. My biggest problem? being miserable all day and finding joy in very few things... food and drink being 2 of them. Moderation, moderation, moderation... that's where I need the most work I think.
On rare occasions I'll take 1600mg of Ibuprofen so that I can move, but I don't take anything on a regular basis, and even then its usually after the tears start forming.