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.
I got work to do. do 3 sets of 10 squats (any version) before each meal. While squats target your quads, they also activate your core and just about every other muscle in your lower body, including your glutes, hamstrings, and calves.