-In an attempt to “bulk up” and increase the size of your muscles,

you have begun a regular swimming regimen, in which you swim 30 minutes each day, four days each unit. After a month has passed, you notice that your stamina in the pool increases—you can swim much farther before your muscles begin to tire. However, your muscle size has not visibly increased. What type of exercises should you include in your daily regimen to build muscle size? Explain your answer.