This comprehensive workout, which Jillian Michaels created for Health, trains the muscles in a way that will bust through even the most persistent plateau. Do it four times a week, paired with 20 minutes of high-intensity interval training, and watch your body be transformed. | Health.com
Work Your Entire Body With This TRX Circuit Routine
If it's the year of the booty (thanks, Iggy and J.Lo), summer is its climax. That's why, for the month of July, we've put together the ultimate 30-day squat challenge, featuring 12 squats that tighten and tone. Master a different squat or increase your reps each day, and we'll have you covered where your teeny bikini doesn't. - Fitnessmagazine.com
Clock press Lean forwards holding the straps (A). Hold your left arm to your chest and extend the right (B). Return to the start and repeat with your other arm. The left-right switches improve your muscle reaction times for better agility.