This isn't good

I got the results of my bloodwork back. My cholesterol has gone up. So now, DH and I both have high cholesterol, and DH also has high blood pressure. We've tried adjusting our diet, although I could do a lot better on that one. I think we both need to get more exercise. Any exercise would be good at this point. DH stopped by the sports club, but he was so disgusted just from talking to the person at the desk that he said he wouldn't go there. I don't want to either. I hate sports clubs. I hate exercising, who am I kidding. It hard to think about exercising at all in this heat, but there always seems to be some excuse for me not to exercise.
We talked about getting bikes (I have an old one), but W. is at the age where he probably wouldn't like riding in a trailer for long, and he's not big enough to ride his own bike with us, so I'm not sure that's a solution. Walking doesn't do much for me. W. doesn't like to go in the stroller anymore, but walking with him, is not aerobic!
I hate getting old!