thats about 1200 calories, please explain why that would crash my metablolism and what happens when a metabolism crashes
1200 is far too low at your weight. You metabolism crashes and basically your body goes into starvation mode. It knows it's too low on calories, it starts storing as much as it can in fat storages for later on, your body starts to slow processes down. You probably feel exhausted, get slight dizzy spells maybe, and feel sluggish. Your body also starts getting rid of muscle because it knows it isn't needed to survive so it starts dropping muscle to use less calories throughout the day. On top of all that, you aren't eating any carbs. Carbs restore glycogen storages which are responsible for muscle contraction. When you lift you'll feel you're working the muscle out, but in reality you're just pumping blood to it to get the burn. It isn't actually tearing muscle fibers which also leads to your body getting rid of muscle because there is no breakdown and repair to tell your body it needs to keep it or grow more. This is why the high rep workouts have been proven to be crap as well as Its only a other way to do cardio.
Basically the right way to diet is a combination of all the crap diets out there (unless you're on steroids). Get your macros in order, from high quality foods while also only being in a SLIGHT calorie deficiency. At 210 lbs I won't drop any weight if I go below 1750 calories. But that varies from person to person. And it also varies by daily activities. I sit at a computer desk all day so it's easier for me to get away with that many calories. However, a construction worker at that weight probably needs at least 2,500 calories to be dropping fat and not muscle.
The hard part is figuring out what really works for your body type. I also recommend starting at a 40/40/20 split, protein, carbs fats. And adjust your carbs to meet your daily calorie intake as needed. Also, vitamins make a huge difference too. Add a cub of some greens to each meal, brocoli, green beans whatever is easiest for you, and a good multi vitamin in the morning...
That's a very basic rundown. I can't spell it all out because it would take an entire thread. But search those concepts and you'll be on your way to quality fat loss while maintaining your muscle that will lead to a great physique.
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