Why would you even be considering a ketogenic diet? Ketosis is designed for human beings to survive starvation. It isn't supposed to fuel any kind of activity. The biological point of ketones is to supplement the brain's energy when glucose is unavailable to your body doesn't consume its muscles and organs at such a rapid rate. Why would you want to build muscle through Crossfit while simultaneously attempting a diet that is designed to consume muscle? Muscle growth + metabolic starvation, as Mr. Anthony said, is a disaster waiting to happen.
Originally Posted by grace2985
Crossfit + marathon training...you'd probably want something like 400-500g of carbohydrate a day and considerably less fat.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.