Calculate calories burned by exercise

reposted from:
http://www.nhsdirect.nhs.uk/magazine/interactive/calories/

Example:

Activity	Time	Calories
Cycling	30 minutes	355
Walking	30 minutes	178

• Total minutes: 60
• Total calories: 533

450-549 calories:

What have I burnt off? 1 tuna mayonnaise baguette, or half a pepperoni pizza.