... was no damage to my heart whatsoever. I'm supposed to start exercising 3-5 times a week for 30-45 mins, but find I can barely get the strength to do so. I am only about 10 pounds overweight, but cannot understand why I can't exercise w/o feeling so exhausted. I never used to get headaches either, I am getting them every day now and I am taking 325 mg of aspirin daily as a blood-thinning medication. I am 58. Anyone else having these problems with Cardizem?