Looking at the shape we're in in the picture gives it away ;)  If we were in the late 20 /early 30 something crowd we wouldn't be in the great shape that we are in the pic or to go to canoe country, just check out the "what exercise thread" .   I am in much better shape now than when I was late 20 / early 30 something.......it's just my bald head and gray hairs that give it away  :)  That's why you'll need your sunglasses on the trip  8-)