Is my math right?

dklmiller
dklmiller Posts: 55 Member
edited November 24 in Health and Weight Loss
MFP has me eating 1200 calories to lose 2 lbs a week. I usually fast on Monday’s so that is minus 1200 more calories. I am starting P90x tomorrow, each workout is estimated to burn 500 calories and I also do yoga a couple times a week. So minus another 2500 calories a week. My total deficit for the week will be about 10,700 calories. By my math, this would put me at deficit of 42,800 calories a month. Multiply that by 3 (for three months) and my deficit will be at 128,400. Divide by 3500 and it comes to 36.6 pounds lost. I think I can stick with it because all I’m doing different is adding P90x.
Stats: cw 167 gw 130 5’3

Replies

  • amtyrell
    amtyrell Posts: 1,447 Member
    You need to eat more. Eat back at least half your exercise calories.
  • amyepdx
    amyepdx Posts: 750 Member
    edited February 2018
    Unfortunately, this is not sustainable at all
  • dklmiller
    dklmiller Posts: 55 Member
    I’ve been fasting on Mondays for a month and have kept under my calorie goal on the other days as well. Is it not sustainable because I’m adding P90x?
  • olive1968
    olive1968 Posts: 148 Member
    Three pounds a week is really aggressive. I think you are going to be very hangry which makes this plan unsustainable. You want to be at 1200 net.
  • dklmiller
    dklmiller Posts: 55 Member
    Thank you
  • netitheyeti
    netitheyeti Posts: 539 Member
    I've done Insanity in combination with yoga before, which I guess is similar-ish.. I'd DIE on 1200 calories and that activity level and I'm roughly same height and a similar goal weight - if nothing else you might eventually notice your energy levels drop during exercise (I know I personally felt like I wasn't getting a good workout if I didn't eat enough that day - I'd either get tired or dizzy)
    Would strongly suggest eating at least part of your exercise calories back
  • dklmiller
    dklmiller Posts: 55 Member
    Okay thank you!
  • Meelisv
    Meelisv Posts: 235 Member
    This overagressive approach is dangerous and not sustainable.
    You need to eat enough to get nessesary nutrients. Change your goal to 1 lb / week, that probably gives you closer to 1500 calories per day or more, if you still want to fast that one day. Also, you should eat back at least some of the excercise calories.
  • malibu927
    malibu927 Posts: 17,562 Member
    You shouldn’t be aiming for more than a 1% loss per week, and even that may be a lot. Set your goal to lose a pound a week, eat that amount plus at least a portion of your exercise calories. Add your calories from Monday in throughout the week.
  • dklmiller
    dklmiller Posts: 55 Member
    Thank you
  • FitandFine2018
    FitandFine2018 Posts: 3 Member
    Pardon my ignorance but what is P90x?
  • dklmiller
    dklmiller Posts: 55 Member
    It’s a weight loss dvd program.
  • Fuzzipeg
    Fuzzipeg Posts: 2,301 Member
    If you go too harshly at this you will loose out on nutrition. I suggest you allow yourself half of the calories you earn with your exercise and see how you go, still looking at 1%. Its not worth spoiling the ship for a half pennyworth of tar, or something.

    When you achieve your goal it becomes more interesting, moving to maintenance it can take some time to understand what you need to do to keep within a few lbs of goal You can set mfp to maintain but there can be personal idiosyncrasies which can effect how accurate this might be.
  • dklmiller
    dklmiller Posts: 55 Member
    Thank you
This discussion has been closed.

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