Do some crunches
make sure you are eating protein after every work out
The hospital is an important public health tool for addressing heart disease
Because the more someone exerts themselves the more oxygen and carbon dioxide out put ratio is greater. The more you run and the faster you run the more oxygen you loose which is supplied to your muscles including your lungs.
The correct answer is A.can only run one or two marathons a year. The reason behind this is running more than 2 is hard on the body and mind. It increases risk of injury and can slow your times for your end result.