Weight Watcher's Thread

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Rohloff_Brompton_Rider

Formerly just_fixed
Can I join? I'll weigh myself later, tho my scales are not the best.
 

Rohloff_Brompton_Rider

Formerly just_fixed
Is this right?

I weigh 17 stone (ish, I'll weigh myself later) and according to the well used figure I should eat 2500 calories per day. If I cycle 25 miles per day on average this month, I'll use an additional 2000 calories per day.

So if I just eat my 2500 calories per day as per guidelines, that means I'll lose 2/3'ds of a pound in weight per day or by the end of February....19lbs.

Or is that too simplistic?
 

potsy

Rambler
Location
My Armchair
Is this right?

I weigh 17 stone (ish, I'll weigh myself later) and according to the well used figure I should eat 2500 calories per day. If I cycle 25 miles per day on average this month, I'll use an additional 2000 calories per day.

So if I just eat my 2500 calories per day as per guidelines, that means I'll lose 2/3'ds of a pound in weight per day or by the end of February....19lbs.

Or is that too simplistic?
I'd say that calorie per mile figure is way too high tbh, is that off a website?
I'm using a 30-35 cal per mile figure that seems to be working out fine for me, so that would be more like 750+ for your 25 miles :thumbsup:
 

Rob3rt

Man or Moose!
Location
Manchester
Is this right?

I weigh 17 stone (ish, I'll weigh myself later) and according to the well used figure I should eat 2500 calories per day. If I cycle 25 miles per day on average this month, I'll use an additional 2000 calories per day.

So if I just eat my 2500 calories per day as per guidelines, that means I'll lose 2/3'ds of a pound in weight per day or by the end of February....19lbs.

Or is that too simplistic?

Calories use per mile will depend on intensity.
 

Rohloff_Brompton_Rider

Formerly just_fixed
Calories use per mile will depend on intensity.
And weight, potsy I weigh a LOT more than you and I ride a 3 speed Brompton around the hills of rossendale, so intensity is always moderate. I used a few different calculators to come up with that figure.....I have no clue if its right or wrong.
 

Rob3rt

Man or Moose!
Location
Manchester
And weight, potsy I weigh a LOT more than you and I ride a 3 speed Brompton around the hills of rossendale, so intensity is always moderate. I used a few different calculators to come up with that figure.....I have no clue if its right or wrong.

For me, from my PM (measuring kJ at the crank) I estimate a 2.5 hour tempo ride (approx 44 miles on the turbo trainer) where the 1st 15 mins and last 15 mins are a warm up and cool down, the middle 2 hours is ridden at tempo burns approx 2000 Cal. For you the values will vary, but it does give some context to your estimates, it suggests the estimates are quite a big over-estimate.
 

Rohloff_Brompton_Rider

Formerly just_fixed
For me, from my PM (measuring kJ at the crank) I estimate a 2.5 hour tempo ride (approx 44 miles on the turbo trainer, where the 1st 15 mins and last 15 mins are a warm up and cool down, the middle 2 hours is ridden at tempo) burns approx 2000 Cal. For you the values will vary, but it does give some context to your estimates.
Ah ok, so it's not going to be that far out, it'll take me 3 to 3 1/2 hours in this wind today to do 36 miles I reckon.

But apart from the calories used figure, is the rest of it that simple?

1lb in extra body weight (?fat) = 3000 calories according to a few websites.

So for every extra 3000 calories worth of exercise I lose a pound in excess body weight?

I don't think my scales are capable of measuring 1lb difference in weight, I'll be lucky if they can measure within 1/4 stone accurately.
 

T.M.H.N.E.T

Rainbows aren't just for world champions
Location
Northern Ireland
Ah ok, so it's not going to be that far out, it'll take me 3 to 3 1/2 hours in this wind today to do 36 miles I reckon.

But apart from the calories used figure, is the rest of it that simple?

1lb in extra body weight (?fat) = 3000 calories according to a few websites.

So for every extra 3000 calories worth of exercise I lose a pound in excess body weight?

I don't think my scales are capable of measuring 1lb difference in weight, I'll be lucky if they can measure within 1/4 stone accurately.
For most purposes 1lb of fat is considered to be 3500cals but this varies depending on who attempts to debunk the theory. 1lb (453g) is actually equivalent of 4077cals if you lost all fat,but you can't and won't.

I'd be interested in where your 3000 figure came from though.
 

Rob3rt

Man or Moose!
Location
Manchester
The approximate deficit required to lose 1 lb is ~3500 kcal. So in theory yes what you said is correct, but as you asked, yes that is too simplistic and sounds dangerous and/or not sustainable.

Let me try to explain why I say this, as an active person (?) who cycles, not only are you expending energy during exercise, but you are increasing your metabolic rate following exercise, so your daily requirement is actually likely higher than the recommended daily allowance just to sustain. So you ought to be careful that you are not under eating, imagine this, you have a metabolism that needs 3500 kcal a day (not that ridiculous, I would expect my figures to be somewhere near this), then you exercise and burn 1000-1500 kcal. But only eat 2500 kcal as you believe some food packet and the daily allowance, you are creating a deficit of 2000-2500 kcal a day, it is just too much and is not the sort of deficit you want to be creating, you won't feel particularly joyful after a few days and you will find it hard to resist eating. 500-750 kcal a day deficit would be a more sensible deficit, easily created, won't leave you very hungry thus less prone to just saying "sack this I am hungry and I will eat............. CHOCOLATE and LARD". Further if the calorie deficit is too large you can engage other mechanisms in the body which are undesirable, such as the much talked about starvation mode. Losing weight is very simple, but can also be made complicated, it is best to keep it simple. Make changes that can be maintained for the long haul, big calorie deficits scream fad diet or marginal bonkerism, aim for something that gives steady results and stick it out.
 

Rohloff_Brompton_Rider

Formerly just_fixed
It's mainly out of curiosity rather than a scientific approach to weight loss. Since cutting out gluten stuff and beer, my pants feel a lot loser, and that's in spite of the snickers bar guzzling (I hope that craving stops soon!).

I reckon I'm about 2 1/2 stone overweight (I'll never get to my recommended bmi, I'm just too big in build). I don't want to lose it too quickly and end up with excess skin.

When I first started commuting to uni and placements a few years ago, I lost weight so quickly I ended up with weird bingo wing things where my triceps are. I started over eating on purpose and it worked and steadied out at around 15 1/2 stone which I was happy with.

But I stopped riding as much and ballooned big style, I don't want to go thru the same problem of losing it too quickly, I'm not in a rush by the end of the year would be nice.
 

redcard

Veteran
Location
Paisley
I'd happily take a few months off work to take part in some scientific research in this area. Wouldn't it be awesome to know how having that extra Mars bar, or riding 5% faster is going to effect your overall performance.
 
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