I've been a dedicated winter rider for the past ten years or so, but for the last five years I've gotten in the habit of getting a nice case of pneumonia in the spring which really puts a damper on the training. I think I'm getting the bugs from the grandkids, but suspect that all that riding in low temps is weakening my immune system. So my solution this year is to only ride outside when the weather is nice or I have no choice, otherwise it's in the basement on the rollers. We'll see how it goes, but for me an hour on the rollers is as much as I can bear.