I started cycling, well I have always been a cyclist but for the last 3 years I had given up, (long story), and the bike was on the garage wall gathering dust.
Start of the year I reached 17 st 5 lbs. Not my heaviest but getting close. I started to get white ish dots under my eyes, and the wife said thats high cholesterol, rubbish I said.
Any way off to the doctors, she was right I was wrong and he said I was mega high risk, and said in 2 years I would be on statins for the rest of my life .........
So come 1st of Jan, diet and started at the gym.
Gym great for 2 - 3 weeks then gets boring as hell. Kept thinking why don't i cycle to work ....
Then I got an email from trek about the bike to work week, and its explained how to eliminate all the excuses I kept thinking up.
I started and now can't imagine how I would not cycle to work.
In answer to your question, once you have the bug you can't stop, but as I get thinner, the cycling gets better cause you get faster and fitter.
So I am now 15 st 9 lb, aim to be under 15 by xmas, and the savings on petrol and cancelled the gym, means I am saving a load of cash.
Its been win win win all the way so far, plus where I live they are building a special guide bus way with its own cycle path, so when its done 90% of my commute (17 miles each way) will be traffic free. So its a no brainer to go by bike, plus an excuse to get a MTB so match my road bike !!