Just today, I’m not going to eat between meals and I’m not going to take seconds. And I’ll use the tools and guidance from The Hacker’s Diet to help me reach (and keep) my goal.
With a (fantasy) goal of losing 40 pounds by New Years, I’m aiming for a 920 calorie shortage a day. Using information from The Hacker’s Diet a woman of my height burns about 1633 calories a day and based on past experience, that seems pretty close. It might be a little closer to 1700 calories, but this number is close enough as a starting place (you might want to check the formulas I referred to a couple of months ago — they give slightly higher results).
I’m going to assume that the 1633 includes walking 3 miles a day but that walking more would add to the calories I’m burning. I figure the 3 miles makes me moderately active, but more than that is a boost in activity level. And that’s why I’ve been aiming for 6 miles of walking a day (yesterday I walked 5.3 miles.) The Walking Site estimates that we burn about 100 calories for every mile we walk.e So that extra 3 miles would mean I’m burning closer to 1900 calories a day.
And that means if I’m aiming for a 900 calorie shortfall, I shouldn’t eat more than 1000 calories a day. Which is possible.w But, unlikely to last for the full 5 months until New Years. At this point, I’m just working with estimates.o I haven’t been tracking both calories and my trendline long enough to know for sure how many calories I’m burning a day. Walker (in The Hacker’s Diet) says:
With the true calorie balance now known, adjust your calorie target to match your body’s burn rate. Suppose you started assuming your body burned 2200 calories a day and planning to eat 1700 calories a day in order to lose a pound a week. After the first month of the diet, you examine the trend chart and discover you actually lost weight faster than you planned: at the rate of 1 1/4 pounds a week, evidence of a daily shortfall of 600 calories instead of the 500 you intended.
As long as you’re carefully following the meal plan you know your calorie intake is close to 1700. The only possible cause of the discrepancy, then, is that you’re actually burning 2300 calories a day rather than the 2200 you guessed. Now you get to choose; if you feel fine losing 1 1/4 pounds a week and prefer to get the diet over with so much the quicker, stay with your original meal plan. If, on the other hand, the extra calorie shortfall is bothering you, simply adjust your meal plan to supply 1800 calories a day: the 2300 you really burn minus 500 for the planned weight loss. In a couple more weeks, you should see a trend line that’s falling one pound a week.
So I’m going to start out aiming for a 900 calorie shortfall and hope that with the extra walking I might actually burn more calories than I think. If that happens, I’ll get a fast start on the weight loss (always an encouraging experience) and I can either stick with it or eat a little more.