What happens when you sit at a desk for 13 years and also exercise
I would strongly suggest anyone looking at this and saying they don't have the time to invest in this to also consider the mental benefits that exercise brings.I don't feel I have time (which I know is wrong) and I particularly do not like gyms, but I cycle to work (2 miles) and on the way home I'll take a detour and add an extra 5-10 miles to my trip home. It clears the cobwebs. Cycling can be very meditative as well.I am extremely lucky to be living in a place that allows me to do this on car free routes (Bath->Bristol cycle path and the Two Tunnels Circuit).If you live within 12 miles (and potentially up to 20 miles)  of where you work (about an hour of easy riding), you should consider 'building' exercise into your commute. Even if it's twice a week to begin with. Be crazy and park your car 5 miles from work and cycle in from there and build it up.FYI before starting this I weighed about 310lb and have got myself down to 275lb within a year without focusing too much on what I eat.