On Mon, 17 Mar 2014 20:09:46 +0000, Chris wrote:

Power average: 74 Watts.
Time taken: 9 minutes.

1 watt is 1 joule/second.

Google "(9*60)*74 joules in kcal"
Gives 9.55 kilocalories.

Energy used: 50 kcal.

Something ain't right. B-)

--
Cheers
Dave.