Sexy Summer Abs Workout Planks, side plank lifts, knee hugs and a whole lot more to get those abs on fire! In between reps on the knee hugs try not to let your feet touch the ground; this will make it even harder and work your lower back as well
THE WEEKEND CHALLENGE: Russian Twists! This move targets all of your abdominal muscles, with an emphasis on your obliques. Pick which version you feel most comfortable with and do 3 sets of 8 reps before every meal this weekend.