That seems unlikely. I'm no biologist, but I do know 1000 food calories = 1 million real calories, divide by 3600 seconds in an hour gives you 278 calories/second, or 7.18 horsepower. Even with biological inefficiencies that's a *lot* of power for one person to consume continuously for an hour.
Okay, so a little more research and it looks like it is possible, but you need to be doing something *seriously* intense.
Hey, can't fault you with playing to your strengths. Myself I find exercising regularly difficult to maintain, I'm doing good if I manage to a few minutes worth of strength training scattered through the day. A couple more tricks I found on the diet side that were quite helpful: Fiber is your friend - the calories are mostly not accessible to our biology, so they don't count. Oatmeal, 100% whole grain bread, etc. (What can I say, I'm a carb addict. I can at least reduce the impact...), and obviously cut out as much sugar as possible - it was a little rough moving to fresh fruit for sweetening my cereal and such, but now that I've acclimated I usually find those oh-so-appealing candy bars cloyingly sweet. I still indulge from time to time, but I often find myself putting half away for later. Victory!
And do try the small flatware/small bites, I was astounded at the difference it makes. Modern flatware has gotten huge, especially the dessert pieces. I use the dessert pieces from a set I inherited from my grandparents. Only thing I've found new in the same size range is stuff intended for feeding babies, but some of it's not too ridiculous.