Be patient and listen to your coach. Your body is about to go into a carb detox. In a few days, you may not be feeling all that great. This is normal.....DETOX. Let your body get adjusted to your food intake before pushing yourself. There are numerous threads on this site that deal with exercise. I suggest you read them all. Also read Dr. Tran's booklet. There is a link to the pdf file on the first post of every DAILY THREAD. Understanding the state of ketosis that you are about to enter will help you with eating as well as exercising. Once you enter ketosis, the glucose (energy from carbs) has been used up in your body and it resorts to buring fat for its energy. This is a low calorie diet. If you exercise too hard and not eat sufficent protein, you body will turn to your muscles to find energy.....we want to keep our muscle and lose the fat. READ THE BOOKLET. As time passes, you will find what your body can and can't do. Walk, do situps and stretching nothing wrong with it in moderation.
“If you want to truly be happy and healthy—begin listening to your body.”―Laura Fenamore