RE: Winter training. Two things that I do not know about you and your wife. 1). What goals you have with tandeming, and 2). Your knowledge about "training" in general. I had a lot of pressure at age 20 to hang with the "big guns" when I received a category 2 USAC racing license. Some things I learned are that "training" should not be restricted to riding from point a to point b at the same pace. Instead, you should mix in some hard efforts during shorter rides.
Atrophy (muscles weakening from not enough pressure) from being sedentary for long periods, can be your enemy. Maybe join a gym and go three days a week. Try least 3 sets (my favorite) of an incremental strengthening regiment such as the leg press (increase leg press 5% per week). I have started at 250 lbs, and in time worked my way (slowly) to 600 lbs. Sitting on a trainer "spinning" may do some good for you aerobically, but with high rpm's, very little in terms of strength.
Last edited by Brian25; 12-02-15 at 09:10 PM.
Reason: misspellings