1 Workout to Bring Your A-Game: No-Equipment Arms and Abs

Reps: 20, alternating sides

• Start in plank with your shoulders over your hands.
• Bring your left knee forward toward your chest, pulling your abs to your spine to deepen the ab work, holding the position for 2 to 3 seconds.
• Switch legs, bringing the right knee forward while moving the right leg back. This completes one rep.