Escape the heat and not your workout with this month’s swim and strength routine. This total-body metabolic workout has you getting in (and out) of the pool for a dry land/swim combo guaranteed to tone your muscles and burn lots of calories.

With the arrival of summer and fall comes racing season. Marathons (half and full), triathlons, obstacle course races (Spartan, ToughMudder, Rugged Maniac) abound, and if you’re planning to race in one of these, you need to make sure your cardio and your legs are strong enough to get you to the finish line.

In honor of the Navy SEALs and all of our military heroes, we're dedicating this month's workout to the brave men and women who have served and continue to serve our country. It's meant to prepare your lungs and muscles for the Memorial Day weekend challenge of completing the "Murph" challenge.

Few workouts are as challenging as High Intensity Interval Training, and fewer yet yield the benefits that HIIT does. Much more effective than a steady cardio session, the short-but-intense activity of a HIIT workout boosts aerobic and anaerobic endurance, ignites your metabolism, and gives you a monstrous calorie burn, all while maintaining or even increasing muscle mass.

Obstacle course races are all the rage at the moment, and with good reason: Few physical endeavors are as grueling. Courses are peppered with various challenges that require total-body strength and muscular and cardiovascular endurance. Since participants don't know what obstacles await, the only way to prepare is to prepare for absolutely anything. This month's workout does just that.

Feel the burn with this month's Full Body Fat Blaster workout. This fat-incinerating routine targets your upper body, lower body, and core — so pretty much your entire body — much more effectively than continuous moderate activity to improve cardio, respiratory, and mechanical functions. The real magic is the resulting boost to your metabolism, which means that you'll continue to burn fat long after you've left the gym.