Interesting quiz on your perception of food portion, real calories and how much exercise to burn off large portions of food. Kind of shocking actually.
http://hp2010.nhlbihin.net/portion/ You have to click on parts I & II. It's fun nevertheless.

From U.S. federal Dept. of Health and National Institute of Health. Your government....who does provide fantastic info. for all Americans and worldwide. (PubHealth, PubMed. is a freely available medical database used worldwide, courtesy of your government. Has existed over last few decades. For those who think govn't is useless in our lives. )
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Jawjaw, I have a lousy habit of having a coffee and little sweet thing, usually a biscotti or muffin or..danish. I have way more sugar in my diet compared to 30 years ago. However, I have noticed that I am less tempted for larger sweeter desserts at supper since my body seems to go into a sugar crash where I feel abit unwell. Have noticed it also when I drink wine for the occasional dinner.

Anyhooo..I continue to cycle 42 kms. (or 25+ miles) daily and abit longer on weekends. Usually I do it first thing in the morning shortly after breakfast, so it's done. It's a great way to kickstart my day/energy.

When do you usually go walking?