Quick and effective side abs workout that you can do at home:
Side plank (30 seconds per side): Lie on your side with your forearm on the ground and your elbow directly beneath your shoulder. Lift your hips off the ground until your body forms a straight line from head to feet. Hold for 30 seconds, then switch sides.
Side crunches (30 seconds per side): Lie on your back with your knees bent and feet flat on the ground. Place your right hand behind your head and your left hand on your left side. Lift your shoulders and right elbow off the ground as you bring your right knee towards your chest and reach your elbow towards your knee. Lower back down and repeat on the other side.
Bicycle crunches (30 seconds): Lie on your back with your hands behind your head and your knees bent. Lift your shoulders and feet off the ground and extend your right leg while bringing your left knee towards your chest. Twist your torso to bring your right elbow towards your left knee. Switch sides and repeat.
Side bends (30 seconds per side): Stand with your feet shoulder-width apart and hold a weight in your left hand. Raise your left arm overhead and lean to the right, sliding the weight down your leg. Return to the starting position and repeat on the other side.
Russian twists (30 seconds): Sit on the ground with your knees bent and feet flat on the ground. Lean back slightly and hold a weight or medicine ball in front of your chest. Twist your torso to the right and tap the weight on the ground, then twist to the left and tap the weight on the ground.
Repeat the circuit for a total of 5 minutes, taking breaks as needed. You can also adjust the reps and weights to suit your fitness level and goals.