In defense of low carb diets you do not feel like crap. You actually have very stable blood sugars. There is no rollercoaster effect from insulin tanking your blood sugars leaving you with low energy. Low carb diets for me make my energy levels very stable. It takes about 3 days for you to not crave food, in this time you will be very hungry when the body turns form glucose to FFA and ketones for fuel. This is all normal but necessary to get into fat burning of body fat.
I wanted to lose about 25 to 30 lbs of bodyweight and primarily fat. I have lost 14 lbs and 4” on my waist so far in about 7 weeks. The 4" should tell you something about what is going on in regards to fat loss.
Remember this is approximately 49000 calories in fuel that has left my body so far.
How many hours of cardio do you think you would need to do in 7 weeks to burn that?
I will do the math for you?
At 700 calories an hour of cardio that would be 7000 hours of cardio.
Do you really think that cardio is the answer over diet?
Also you have to remember that when you are at a sprint you burn almost 100% glycogen and dont even target fat loss.
Once I hit my target weight I will have to up my macronutrients (carbs/proteins/fats) or I will still continue to lose weight.
I will not rebound I assure you, but when I hit my target weight I will show you in pics that I wont be lacking in muscle and look like my diet has gone bad in any ways shape of form, even for a 46 year old man.
Pictures tell a thousand words and this will be my proof of what I have been preaching.
I drank beer for many years, abused my body with crap food and it took 9 years to get where I was overweight and not looking good.
A little correction on your numbers too, the body can store up to 400 grams of carbs in the muscle and 70 grams in the liver.
A little thing you need to remember about fats. Fats are the number one suppressing food for insulin. Contrary to what many people think about fat it does not store as fat. Insulin is the hormone that stores fat and without the influence of insulin in the diet it is actually hard to store fat. It takes either excess calories over and above or the presence of insulin to store fat.
Remember we are talking about dieting right here. Many people are sensitive to insulin and a low carb approach is sound thinking for those with hyperinsulinemia and insulin resistance.