Hi - I am not surprised that you would get dizzy doing walks like that with such a low calorie intake. 1200 calories is for a woman who is average weight and very sedentary. Overweight women and those who are active (walking that distance certainly counts as active) need a fair bit more! It would also be a major player in your having regained the weight.
I suggest that you start this journey off with baby steps, changing only one or two things to start with, and allowing your mind/body to get used to the changes before adding something else to the mix. It might be something as simple as reducing soda, and mobilizing a wee bit more in the day. When your body/mind has gotten used to the change, add something else to the mix - maybe a couple or three extra pieces of fruit/veges?? :-)
When I first had to reduce my calories it was only by 250-450 calories per day. I dropped suddenly. It caused a lot of problems - nausea, light-headedness and even getting woken in the middle of the night suffering with it and hunger PAIN. I had to go back up and gradually work down - my Dietitian had given me 1400 calories - no range.
You will find if you make a SparkPage you will get more support from the members - they will be able to drop by and leave encouraging little messages. This has been proven to help us to reach our goals, and it is also a great way to form some real good friends on the way (and get loads of SparkGoodies :-)
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