<p>Just for fun and for an idea, Here's an alternating daily workout I just made up that should help you on endurance, primarily built around the kind of exercises you will do at the Academy, whether in basic or for a PFT or just in general:</p>
<p>Day 1:</p>
<ol>
<li><p>Short hard run
(1.5-2 miles as quickly as possible)</p></li>
<li><p>Do as many pushups as you can without stopping or resting, repeat 3 times.
(Make sure form is perfect-right spacing of arms, feet together, straight back)</p></li>
<li><p>Do 50 4-count flutter kicks
(count 1,2,3,4 as your legs move) three times.</p></li>
<li><p>Do 25 squats 3 times.
(Make sure heels stay on the floor and you go down until your legs are parallel to the ground.)</p></li>
</ol>
<p>Day 2:</p>
<ol>
<li><p>Endurance run
(4+ miles at a medium pace. If you are an advanced runner, wear boots, and/or wear a backpack and put a few books in it)</p></li>
<li><p>Do as many pullups as you can 3 times.
(Try to find a pullup bar or a substitute, otherwise do pushups instead. Make sure form is good-fully extend arms on the way down and make sure chin goes all the way above the bar.)</p></li>
<li><p>Do 50 situps or crunches 3 times.
(I reccomend doing variations if you know any, such as side crunches, butterfly crunches, etc.)</p></li>
<li><p>Do 20 lunges on each leg. Repeat 3 times.
(Make sure leg goes as close to the ground without touching as possible, and your knee does not extend past your foot.)</p></li>
</ol>
<p>This is just a suggestion, but if you stay dedicated to these kinds of exercises it should help. If nothing else, do pushups, pullups, and RUN. RUN RUN RUN. That will help you better than anything else, since it will build up your cardiovascular system and give you more overall endurance.</p>
<p>Second, I recommend a good private trainer if you can find one and don't mind the extra few bucks...they can give you some good variations of standard exercises that will really give you a good workout in a shorter time. </p>
<p>If you want to do some weights, make sure you don't overdo it...stay on the endurance track.</p>
<p>Hope this helps.</p>