Just started back into using the gym at work to go for a run twice a week (starting at 20 minutes, building up to doing a 10k twice a week).
Even days with no specific exercise involve a long walk or other activity with my 4-year-old (lugging her about is quite a good upper body workout!)
(Ignoring the debate about the suitability of BMI for everyone...) My BMI is currently over 30 (92kg, 1.73cm) but I'm quite stockily built and haven't seen it below 25 (76kg) since my teens, not even when I was running cross country half marathons and doing lots of long-distance cycling (rides of 200km+). It's crept up as I'm eating too much and drinking a bit too much. Aiming to get back to 76kg; at a steady/sensible 0.5kg a week that's 30 odd weeks; done it before, it's not tricky. I find the bit from 85kg to 76kg much easier than the first bit from 92kg to 85kg; running is much more unenjoyable (I dislike it at the best of times) when heavier.
I lurch between years of lots of exercise and fallow years, 2014 should be a good year.