Your answer would be B...
<span>John is loosing weight because his body is burning all of the carbs he has stored. After the initial burning of the stored carbs, Johns body will begin to burn stored fat. If and when he introduces carbs back into his diet, the weight is likely to return. There can be a negative of low carbs in the diet because carbs are the main energy source for the cells mitochondria (energy producers). It is not recommended to go on a very low carb diet. It is recommended that a well balanced diet be consumed for weight loss and maintenance.</span>
Every two weeks increase your distance by 2 miles. Focus on strength training 3 times a week and increase intensity at each work-out until you are at a plateau. Continue there building endurance. Keep a record of your heart rate so you don't overdo it.
Pretty sure it’s studies because you read textbooks to learn more about the subject. So B.Studies
