Originally Posted by
jfan
You can't out exercise a crappy diet. It's all about calories in/calories out, and there's no way around it. Find a way to track calories that you're able to stick with for the long haul. I use Myfitnesspal, once set up it's a piece of cake to enter your daily calorie intake and expenditure. I've been using it for years.. A good way to limit your calories is to cut out refined sugars and saturated fats. Keto is not a good choice for those who do a lot of cardio such as cycling, you need the carbs to avoid bonking on long rides.
You only need the carbs if you are a carb burner. When your body has been burning fat for energy more than 3 months the cell structure actually changes and gets more efficient. When you get off the routine of blood sugar spikes and plummets caused by high glycemic foods,you don't need the carbs to build blood sugar back because you just burned it all or insulin drove it down too much, trying to deal with the sugar.
Many top athletes are now doing keto to actually have more endurance and energy.