Assume push-up position, arms straight, back flat, core tight. Hold 20-30 seconds, increasing duration. Strengthens core, posture, and endurance.
Lie on your back, lift shoulders, touch opposite elbow to knee alternatingly. Perform 15-20 reps per side for oblique strength.
Lie on your back, lift legs perpendicular to the floor, lower without touching ground. Repeat 10-15 times for lower abs.
Sit on the floor, knees bent, feet lifted, and back leaned. Twist torso side to side. Do 15-20 twists per side. Engages obliques.
Begin in plank, drive knees towards chest in a running motion for 30 seconds to 1 minute, engaging your core.