Sure it does. It can breakdown muscle tissue - and WILL do so particularly if/when training or cardio becomes too intense.
As I said earlier, ultimately the OP needs to decide what makes sense and then put a plan in motion to see how he responds. Admittedly, i'm biased against keto diets due to my own personal history with them, but as stated, that doesn't mean they don't work as I personally know people who have had great success with them.
OP - i'm being nice about it. Ask Marcus300 what he thinks about your idea!!!
