When it comes to quick and effective workouts, nothing beats a boot camp! This 15-minute sweat session mixes cardio bursts with strength training to double the benefits of your workout. Grab a dumbbell between five and 10 pounds, press play, and then bring it! And do watch the Pretty. Strong. series premiere Tues., Oct. 6, at 10 p.m./9 p.m. Central on Oxygen.