Engage core and stabilize body from elbows to heels. Hold 30 sec-1 min for strength. Repeat three sets to build endurance and improve posture.

Strengthen lower abs by lifting legs toward ceiling and lowering without touching ground. Perform three sets of 15-20 reps for toned muscles.

Boost heart rate while engaging lower abs in plank position. Alternate legs swiftly for 1-2 minutes per set. Repeat three sets for cardio and core benefits.

Work obliques and lower abs by twisting torso while pedaling legs in a lying position. Aim for three sets of 20-30 reps for defined midsection.

Trim sides and lower belly with seated twists using weight or ball. Complete three sets of 15-20 reps per side for oblique strength and core stability.

Lift hips toward chest from lying position to target lower abs. Perform three sets of 15-20 reps for a stronger core and toned midsection.

Lie on back, hands under hips, and kick legs in fluttering motion to engage lower abs. Complete three sets of 1-2 minutes for muscle endurance.

Form "U" shape with lifted legs and upper body off ground for total core activation. Hold 30 sec-1 min per set, repeating three sets for core stability.