There are many ways to exercise during the day that don't require too extra much time.

Take the stairs instead of the elevator, park your car a block or two further away, or get off the bus or train one stop early and walk the rest. Same with the way home - get off one stop early.

Walk at lunchtime as you say, eebee, or find a lunch group that walks and join them. If you can't find one - start one! Support is great, and makes you DO IT. And play fast music on your walkman... it makes you walk harder than quiet, Barry Manilow love songs!

If there is a golf course nearby, take a half-hour lesson at lunchtime a few times a week. Great for your arms, and you are doing more exercise than most people realise!

Many gyms have a half-hour lunchtime aerobics session, tho you have to eat your lunch on the run! And a real good trick is to offer an aerobics instructor a half hour session at your workplace - if there is a suitable room or park and enough interested people to share the cost. ($50 would be a good offer, in fact it would be a darn good offer!) These instructors do anything, believe me. Shop around. And a simple stretching or yoga routine won't leave you all sweaty.

If you work at a desk, every half hour or so try sitting with your knees locked together, feet held together just off the floor and your back slightly away from the back of your chair for as long as you can. You'd be surprised what that does for your legs and tummy, and in the long run, your posture! Watch and see how your indurance improves. Oh, and hang up a a post-it note to remind yourself to do it!

And for those tv hours, simply hire an exercise bike, treadmill or rowing machine and do it gently all the way through Law and Order. Even tape the tv aerobics/tai chi show and do that later when you can fit in the half hour. Saves buying those expensive tapes.

Oh and turn down the heat. I'm told you burn more by shivering than sweating but that could be just a myth!